Yes, there are enough evidence to show mean CO2 emission is lower in 2010 than in 2004.
The random variable is mean CO2 emission per capita , population parameter is CO2 emission per capita in population and null hypothesis is rejected as p-value is smaller than significant value.
The random variable is represented as the mean CO2 emission per capita.
The population parameter represented as the interest is the true mean CO2 emission per capita in the population in 2010.
Let μ_0 be the population mean CO2 emission per capita in 2004
And μ_1 be the population mean CO2 emission per capita in 2010.
The null hypothesis is,
There is no difference in the mean CO2 emissions per capita between 2004 and 2010,
H0: μ_0 = μ_1
The alternative hypothesis is,
The mean CO2 emissions per capita in 2010 are lower than the mean CO2 emissions per capita in 2004,
Ha: μ_0 > μ_1
To determine whether there is enough evidence to reject the null hypothesis,
Collect data on CO2 emissions per capita in 2010 and perform a hypothesis test .
Using a suitable statistical test such as a one-sample t-test.
If the test results in a p-value that is smaller than the chosen significance level (typically 0.05).
Reject the null hypothesis .
And conclude that there is enough evidence to show that the mean CO2 emissions per capita are lower in 2010 than in 2004.
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If triangle ABC has points A(2, -4) B(-3, 1) C(-2, -6) and you perform the following transformations, where will B' be?
Reflection over the y-axis, rotation 90° clockwise, and translation (x + 2, y - 1)
B'( , )
Therefore, the coordinates of the image point B' are (3, -4) when a triangle ABC has points A(2, -4) B(-3, 1) C(-2, -6).
To find the image of point B after performing the given transformations, we need to apply them in sequence.
Reflection over the y-axis:
This transformation will change the sign of the x-coordinate of point B, while leaving the y-coordinate unchanged. Therefore, the image of point B after reflection over the y-axis is (-(-3), 1), which simplifies to (3, 1).
Rotation 90° clockwise:
This transformation will swap the x and y-coordinates of the point and then change the sign of the new x-coordinate. Therefore, the image of point B after rotation 90° clockwise is (1, -3).
Translation (x + 2, y - 1):
This transformation will shift the image of point B two units to the right and one unit down. Therefore, the final image of point B after all three transformations is (1 + 2, -3 - 1), which simplifies to (3, -4).
Therefore, the coordinates of the image point B' are (3, -4).
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The Hcf and Lcm of two numbers are 4 and 288. What are the two numbers?
Step-by-step explanation:
Let the two numbers be x and y.
We know that:
HCF(x,y) × LCM(x,y) = x × y
Substituting the given values:
4 × 288 = x × y
Simplifying:
x × y = 1152
Now we need to find two numbers whose product is 1152 and HCF is 4. One way to do this is to list all the factors of 1152 and find a pair of factors whose HCF is 4. However, we can also solve this problem by prime factorization.
Prime factorization of 1152:
1152 = 2^7 × 3^2
To find the two numbers, we need to divide these factors into two groups, one group for x and the other group for y. We can choose any combination of factors, as long as their product is 1152. However, we also need to ensure that the HCF of x and y is 4.
One possible way to do this is to choose one factor of 2 from the prime factorization of 1152 for x and the remaining factors for y:
x = 2^1 × 3^a
y = 2^6 × 3^b
where a and b are non-negative integers.
Multiplying x and y and equating to 1152, we get:
2^1 × 3^a × 2^6 × 3^b = 1152
Simplifying:
2^7 × 3^(a+b) = 1152
Since 1152 = 2^7 × 3^2, we have:
2^7 × 3^(a+b) = 2^7 × 3^2
Equating the exponents of 2, we get:
7 + 0 = 7
a + b = 2
Since the HCF of x and y is 4, we need to ensure that both x and y have a factor of 2^2 = 4. Thus, we choose a = 2 and b = 0:
x = 2^1 × 3^2 = 12
y = 2^6 × 3^0 = 64
Therefore, the two numbers are 12 and 64.
steve is trying to earn $300 in interest for a new guitar. he puts $2500 in an account that earns 2% interest yearly (simple interest). how long will it take to earn $300?
The time required to earn $300 in interst on a principal of $2,500.00 at an interest rate of 2% per year is 6 years.
Steve puts $2500 in an account that earns 2% interest yearly.
This means principal P = $2500
And interest rate as percentage (R) = 2%
He is trying to earn $300 in interest
I = $300
so, the final amount A = P + I
A = $2800
Now we convert the rate of interest R percent to r a decimal:
r = R/100
r = 2%/100
r = 0.02 per year,
We need to find the number of years t:
We know that the formula for the simple interest is:
A = P(1 + rt)
So, t = (1/r)[A/P - 1]
t = (1/0.02)((2800/2500) - 1)
t = 6
Therefore, the time required to earn $300 in interst = 6 years
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A rectangular poster has an area of 35 square feet. It is 5 ft. at its base. What is the
height of the poster?
The rectangular poster is 7 feet tall.
which has the form of a rectangle?The rectangular shape in two dimensions has four sides, four corners, and four right angles (90°). Equal and parallel opposing sides make form a rectangle. Being a two-dimensional form, a rectangle has length and breadth as its two dimensions.
The procedure for calculating a rectangle's area may be used to get the rectangular poster's height:
Area = length * width
In this case, we know that the area is 35 square feet and the width (or base) is 5 feet. So we can rearrange the formula to solve for the length (or height):
length = Area / width
Substituting the values we get:
length = 35 sq ft / 5 ft = 7 ft
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A tangent segment is a line segment that has a point on the tangent line and on the center of the circle.
It is a true statement that tangent segment is a line segment that has a point on the tangent line and on the center of the circle.
What does tangent segment means on a Circle?In geometry, a tangent segment is a line segment that intersects a circle at exactly one point, known as the point of tangency. This line segment is called a tangent because it touches the circle at a single point and does not cross through the circle.
The tangent segment's length is determined by the distance between the point of tangency and a point on the line that is outside the circle, known as the external point. This distance is equal to the radius of the circle, as the radius is the distance between the center of the circle and any point on the circle's circumference.
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Use the equation in the example to find the number of
cups of water you need if you have 12 cups of flour.
Answer: 2.5
Step-by-step explanation:
Given the equation: f = 2.5w
The constant of proportionality is 2.5.
This means that the ration of the cups of flour to the cups of water used in the recipe is 2.5
Find the polynomial that multiplied to 32
is equal to −124 − 62
1a) Show your work below to demonstrate how to obtain the polynomial
PLEASE HELP I NEED TO PASS THIS
The missing number in the blank is -5. To find the polynomial that multiplied by 327 is equal to -12s^2 - 62, we need to factorize the expression. We can start by finding the factors of 327. We can see that 327 = 3 x 109. Now, we need to express -12s^2 - 62 in terms of these factors. We can write:
-12s^2 - 62 = -6 x 2 x (s^2 + 5)
Therefore, the polynomial that multiplied by 327 is equal to -12s^2 - 62 is:
(2)(-6)(s^2 + 5)
= -12s^2 - 60
So, the missing number in the blank 322 ( ) = 2st - 62 is -5. We can write the complete polynomial as:
(2)(-6)(s^2 + 5) = -12s^2 - 60
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The function F is defined by F(x) = 12/x+1/2. Find each value of the function.
F(k) =
Each values of the function are;
[tex]F(3) = \frac{9}{2} , F(-12) = -\frac{1}{2} , F(\frac{1}{3}) = \frac{73}{2} , F(\frac{3}{4}) =\frac{33}{2}[/tex]
Define the term function?A function is a relationship between two sets of numbers, called the domain and the range, such that each input value from the domain corresponds to exactly one output value from the range. A function can be thought of as a rule that assigns to each input value a unique output value. The most common way to represent a function is by using an equation or formula that defines the relationship between the input values and the output values. The variable in a function represents the input values from the domain.
Given function;
[tex]F(x) = \frac{12}{x} + \frac{1}{2}[/tex]
We need to find the values of function [tex]F(3) , F(-12) , F(\frac{1}{3}) , F(\frac{3}{4})[/tex]
Put the values of x = 3, -12, 1/3, 3/4 one by one in the given function of [tex]F(x) = \frac{12}{x} + \frac{1}{2}[/tex]
1. If x= 3; [tex]F(3) = \frac{12}{3} + \frac{1}{2} = \frac{9}{2}[/tex]
2. If x= -12; [tex]F(-12) = \frac{12}{(-12)} + \frac{1}{2} = -1 + \frac{1}{2}[/tex] [tex]= -\frac{1}{2}[/tex]
3. If [tex]x=\frac{1}{3}[/tex]; [tex]F(\frac{1}{3} ) = \frac{12}{(\frac{1}{3}) } + \frac{1}{2} = 36+\frac{1}{2}[/tex] [tex]= \frac{73}{2}[/tex]
4. If [tex]x=\frac{3}{4}[/tex]; [tex]F(\frac{3}{4} ) = \frac{12}{(\frac{3}{4}) } + \frac{1}{2} = 16 +\frac{1}{2}[/tex] [tex]= \frac{33}{2}[/tex]
Therefore the values are; [tex]F(3) = \frac{9}{2} , F(-12) = -\frac{1}{2} , F(\frac{1}{3}) = \frac{73}{2} , F(\frac{3}{4}) =\frac{33}{2}[/tex]
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Complete question-
Britney is mapping out a new running path around her local park. She is going to run west for 2.1 km, before turning 105" to the night and running another 3.3 km From there, she will run in a straight line back to her starting position. How far will Britney run in total? Give your answer correct to the nearest meter.
Answer:
Britney will run approximately 9,090 meters in total.
Step-by-step explanation:
To solve the problem, we can use the Law of Cosines to find the distance of the final straight line back to her starting position.
Let A be the starting position, B be the end of the first leg, and C be the end of the second leg. Then, we have:
AB = 2.1 km BC = 3.3 km ∠ABC = 180° - 105° = 75°
Using the Law of Cosines, we have:
AC² = AB² + BC² - 2(AB)(BC)cos(∠ABC)
AC² = (2.1)² + (3.3)² - 2(2.1)(3.3)cos(75°) AC ≈ 3.69 km
Therefore, Britney will run a total distance of approximately:
2.1 km + 3.3 km + 3.69 km ≈ 9.09 km
So, Britney will run approximately 9,090 meters in total.
a skateboarding ramp is 16 in. high and rises at an angle of 13 degrees. How long is the base of the ramp? Round to the nearest inch.
In the trigonometric function , the length of the base of the ramp is
3.69 in.
What is trigonometric function?
The functions of an angle in a triangle are known as trigonometric functions, commonly referred to as circular functions. In other words, these trig functions provide the relationship between a triangle's angles and sides. There are five fundamental trigonometric functions: sine, cosine, tangent, cotangent, secant, and cosecant.
Here Height of ramp = 16in , angle = 13 degrees.
Now The skateboard ramp arrangement looks like a right angled triangle,
then using trigonometric ratio ,
=> tan 13° = opposite/adjacent
=> tan 13° = 16/x
=> x = 16/tan 13°
=> x = 3.69 in
Hence the length of the base of the ramp is 3.69 in.
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21.
Ada Mae bought a pen for $1.50 and 3 DVDs that each cost the same amount. She spent $22.50
in all. Which equation models the situation?
A, 1.5+3d=22.5
B. 3(1.5) +d=22.5
C. 3d-1.5=22.5
D. 1.5=22.5+3d
Items: 1 Pen: 1.50
3 DVDS: ???
Total : 22.50
It is A, 1.5+3d=22.5.
Hope this helps!!!
It is not B because you are not multiplying the number and cost of 3 DVDS by the cost of one pen.
It is not C because you are not subtracting to find the total cost. You are adding.
It is not D because 3d is part of the total cost so that option just doesn't make sense.
Adam, Ben and Carly work out the mean of their ages.
Adam is 4 years older than the mean. Ben is 1 year younger than the mean.
Is Carly older or younger than the mean?
By how many years?
Answer:
messageAdam, Ben and Carly work out the mean of their ages.Adam is 4 years older than the mean. Ben is 1 year younger than the mean.Is Carly older or younger than the mean?By how many years?Let's start by finding the mean of their ages. We can do this by adding their ages and dividing by the number of people: Mean = (Adam's age + Ben's age + Carly's age) / 3 Let's call the mean "M" for now. We can use this to create two equations based on the information given: Adam = M + 4 Ben = M - 1 We can substitute these equations into the mean equation to get: M = (M + 4 + M - 1 + Carly's age) / 3 Simplifying this equation gives us: 3M = 2M + 3 + Carly's age Carly's age = M - 3 So Carly's age is younger than the mean by 3 years
6. Which of the following is the turning point of the function y = (x-8)²-2?
(1) (8,-2)
(2) (-8, 2)
(3) (-8,-2)
(4) (8, 2)
Answer:2
Step-by-step explanation:bc
One more than two-thirds of a number is no less than 25
One more than two-thirds of a number is no less than 25 is x = -30.
An equation is a mathematical expression that contains two algebraic expressions on either side of the "equals (=)" sign. It shows the equality between the words written to the left and the words written to the right. In all mathematics there is L.H.S = R.H.S (left side = right side). Equations can be solved to find the values of unknown variables that represent unknown quantities or numbers. If there is no "equals" sign in the expression, it means it is not equal. It will be treated as a guide.
let the no. be x
According to the question:-
2/3 × x = 1/2× (x-5)
⇒ 2x/3 = x/2- 5
⇒ 2x/3 - x/2 = -5
⇒ (4x- 3x)/6 = -5
⇒ x/6 = -5
⇒ x = -30.
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-1/2(32x-40)+(20x-4)
Answer:
4x+16
Step-by-step explanation:
Distribute -1/2 to 32 and -40
That gets you -16x+20+20x-4
Combine -16x and 20x which gets you 4x+20-4
subtract 4 from 20
4x+16
what is the probability that at least two of the six members of a family are not born in the fall? assume that all seasons have the same probability of containing the birthday of a person selected randomly.
The probability that at least two of the six members of a family are not born in the fall is approximately 0.66.
Since there are four seasons and each season has an equal probability of containing a randomly selected person's birthday, the probability that a person's birthday is not in the fall is 3/4. Therefore, the probability that all six family members are born in a season other than fall is (3/4)⁶, which is approximately 0.18.
The probability that only one family member is born in the fall is 6*(1/4)*(3/4)⁵, which is approximately 0.41. To find the probability that at least two family members are not born in the fall, we can subtract the probability that all six are born in the fall or only one is born in the fall from 1: 1 - 0.18 - 0.41 = 0.41.
In conclusion, the chance of having at least two out of the six family members not born in the fall is roughly 66%.
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a surgical procedure requires choosing among four alternative methodologies. the first can result in five possible outcomes, the second can result in two possible outcomes, and the remaining methodologies can each result in three possible outcomes. what is the total number of outcomes possible?
A surgical procedure requires choosing among four alternative methodologies. the first can result in five possible outcomes, the second can result in two possible outcomes, and the remaining methodologies can each result in three possible outcomes. The total number of outcomes possible is 90.
The first one can result in five possible outcomes, the second one can result in two possible outcomes, and the remaining methodologies can each result in three possible outcomes. The total number of outcomes possible is a question the student needs an answer to.
To calculate the total number of outcomes, we have to multiply the number of results from the first methodology by the number of results from the second, third, and fourth methodologies. There are four alternative methodologies, and so we multiply the number of results from each methodology to calculate the total number of outcomes.However, we should use a calculator to solve this problem.
The first methodology can result in five possible outcomes, the second methodology can result in two possible outcomes, and the remaining methodologies can each result in three possible outcomes. We can use the following expression to determine the total number of outcomes:
5 × 2 × 3 × 3 = 90
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weight loss x runs a number of weight reduction centers within a large city. from the historical data it was found that the weight of the participants is normally distributed with a mean of 175 lbs and a standard deviation of 35 lbs. calculate the standard error of the average sample weight when 15 participants are randomly selected for the sample? enter your answer rounded to two decimal places. for example, if your answer is 12.345 then enter as 12.35 in the answer box.
The standard error of the average sample weight when 15 participants are randomly selected for the sample is 9.05 (rounded to two decimal places).
The standard error of the average sample weight when 15 participants are randomly selected for the sample can be calculated using the formula given below:SE = σ/√nWhere,σ = standard deviation of the populationn = sample sizeSE = standard error of the meansubstituting the given values,SE = 35/√15 = 9.05
Note:When using the given formula, it is important to note that it assumes a normal distribution of sample means. The standard error is used to estimate the true value of the mean from the sample data. The larger the sample size, the smaller the standard error. The smaller the standard error, the more precise the estimate of the true value of the mean.
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If the simple interest on 5000 dollars for 5 years is 2000 dollars the what is the interest rate
[tex]~~~~~~ \textit{Simple Interest Earned} \\\\ I = Prt\qquad \begin{cases} I=\textit{interest earned}\dotfill & \$ 2000\\ P=\textit{original amount deposited}\dotfill & \$5000\\ r=rate\to r\%\to \frac{r}{100}\\ t=years\dotfill &5 \end{cases} \\\\\\ 2000 = (5000)(\frac{r}{100})(5) \implies 2000=250r\implies \cfrac{2000}{250}=r\implies \stackrel{ \% }{8}=r[/tex]
4.5 Draw a diagram representing the scenario and find the requested value. A man is standing 270 feet from the base
of a statue. If he man looks up at an angle of 34 degrees to see the top of the statue, how tall is the statue. Please
round to the nearest whole foot.
Therefore, the height of the statue is approximately 192 feet.
What is height?Height is a measure of how tall or high something or someone is, typically referring to the vertical distance from the base of an object or person to its highest point. It can be measured in various units such as feet, inches, meters, centimeters, etc. Height is an important physical characteristic of living organisms and is often used as a parameter in many applications, such as architecture, construction, athletics, and medical assessments.
by the question.
let A be the top of the statue, B be the position of the man, and θ be the angle of elevation from the man to the top of the statue. Let AB = h be the height of the statue and let BC = 270 ft be the distance between the man and the base of the statue.
We can use the tangent function to find the height of the statue:
tan(θ) = opp/adj = h/BC
Solving for h, we get:
h = tan(θ) * BC
Substituting θ = 34 degrees and BC = 270 ft, we get:
h = tan (34) * 270
h ≈ 192 ft
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I need help with one of my math problems. I need to simplify, not answer it
20 divided by(4-(10-8)
Answer:
Step-by-step explanation:
20 ➗ (4 * (10 - 8)
10 - 8 = 2 * 4 = 8
Then, 20 ➗ 8 = 2.5
the alpha level for a hypothesis test defines the critical region the alpha level for a hypothesis test defines the critical region true false
True. The alpha level for a hypothesis test defines the critical region.
A hypothesis test is a statistical technique that is used to test an assumption or hypothesis regarding a population parameter or distribution.
The critical region refers to the region of the sampling distribution that contains values that are unlikely to have occurred by chance if the null hypothesis is true.
The alpha level is the probability of committing a type I error, which is rejecting the null hypothesis when it is actually true.
The critical region is defined by the alpha level, which is the level of significance or the maximum probability of rejecting the null hypothesis when it is actually true. For example, if the alpha level is set at 0.05, the critical region will be the upper and lower 2.5% of the sampling distribution. If the test statistic falls within this region, the null hypothesis is rejected. On the other hand, if the test statistic falls outside this region, the null hypothesis is accepted.
Therefore, the alpha level plays a crucial role in determining the critical region and making decisions based on the results of the hypothesis test.
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Read the following word problem. Solve and write your answer in a statement. Ex
solve the problem. Show all of your work.
Hank buys his dog food in bulk by
the bag. He uses a scoop that
holdscup of dog food and feeds
8
his dog one scoop a day.
If there are 5 cups of dog-food in
the bag, how many days can he
feed his dog?
Hank can feed his dog for 40 days with one bag of dog food.
Define fractionA fraction represents a part of a whole or a ratio between two quantities. It is a mathematical expression that consists of a numerator and a denominator separated by a horizontal line, also called a fraction bar or a vinculum.
To solve the problem, we need to find how many scoops of dog food are in the bag and divide that by the number of scoops used per day:
Number of scoops in bag = 5 cups ÷ 1/8 cup/scoop = 40 scoops
Number of days he can feed his dog = 40 scoops ÷ 1 scoop/day = 40 days
Therefore, Hank can feed his dog for 40 days with one bag of dog food.
Statement: Hank can feed his dog for 40 days with one bag of dog food.
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A plan of a school compound is drawn to a scale of 1cm represent 5m. 1 find its length and breadth of the drawing. If the football field is 50m by 30m. 2 if the scale drawing of the hall is 7cm by 32cm rectangle, find its length and breadth
the length of the hall is 35 m and the breadth of the hall is 160 m.
To find the length and breadth of the drawing, we need to use the scale given. We know that 1 cm represents 5 m, so we can use this proportion to find the actual dimensions of the school compound:
1 cm : 5 m = x cm : y m
To find the length of the drawing, we can use the given dimensions of the football field, which are 50 m by 30 m:
Length of the drawing = 50 m / 5 m per cm = 10 cm
Breadth of the drawing = 30 m / 5 m per cm = 6 cm
Therefore, the length of the drawing is 10 cm and the breadth of the drawing is 6 cm.
To find the actual length and breadth of the hall, we need to use the scale given. We know that 7 cm represents the length and 32 cm represents the breadth:
Length of the hall = 7 cm x 5 m per cm = 35 m
Breadth of the hall = 32 cm x 5 m per cm = 160 m
Therefore, the length of the hall is 35 m and the breadth of the hall is 160 m.
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someone help me please and asap
(a) GI side of right triangle GHI is the hypotenuse.
(b) GI is the side which is opposite to ∠H
(c) GH is the side that is adjacent to ∠G.
What is right angle Triangle?A right-angled triangle is a type οf triangle that has οne οf its angles equal tο 90 degrees. The οther twο angles sum up tο 90 degrees. The sides that include the right angle are perpendicular and the base οf the triangle. The third side is called the hypοtenuse, which is the lοngest side οf all three sides.
(a) GI side of right triangle GHI is the hypotenuse.
(b) GI is the side which is opposite to ∠H
(c) GH is the side that is adjacent to ∠G.
(d) HI is the side that is opposite to ∠G
(e) HI is the side that is adjacent to ∠I.
(f) GH is the side which is opposite to I.
(g) 5 : 12 is the numerical ratio of the length of the side opposite to G to the length of the side adjacent to ZG.
(h) 12 : 5 is the numerical ratio of the length of the side opposite to I to the length of the side adjacent to I.
(i) 5 : 13 is the numerical ratio of the length of the side opposite to G to the length of the hypotenuse.
(j) 12 : 13 is the numerical ratio of the length of the side adjacent to ZG to the length of the hypotenuse.
(k) 12 : 13 is the numerical ratio of the length of the side opposite to I to the length of the hypotenuse.
(H) 5 : 13 is the numerical ratio of the length of the side adjacent to I to the length of the hypotenuse.
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suppose the cpa practice advisor reports that the mean preparation fee for 2017 federal income tax returns was $273. use this price as the population mean and assume the population standard deviation of preparation fees is $100. (a) what is the probability that the mean price for a sample of 40 federal income tax returns is within $16 of the population mean? (round your answer to four decimal places.) (b) what is the probability that the mean price for a sample of 60 federal income tax returns is within $16 of the population mean? (round your answer to four decimal places.) (c) what is the probability that the mean price for a sample of 81 federal income tax returns is within $16 of the population mean?(round your answer to four decimal places.) (d) which, if any, of the sample sizes in parts (a), (b), and (c) would you recommend to ensure at least a 0.95 probability that the sample mean is within $16 of the population mean? (select all that apply.)
(a)The probability that the mean price for a sample of 40 federal income tax returns is within $16 of the population mean is 0.6884, (b)The probability that the mean price for a sample of 60 federal income tax returns is within $16 of the population mean is 0.7805. (c) The probability that the mean price for a sample of 81 federal income tax returns is within $16 of the population mean is 0.8502. (d) The best sample sizes are 153, and 154 so that at least a 0.95 probability that the sample mean is within $16 of the population mean
The solution to the given problem is as follows:A) For sample size of 40 Sample size, n=40Sample Mean, x = $273 Standard deviation of the population, σ= $100. Sampling Error = Standard error of mean = σ/√n = 100/√40 = $15.8114 therefore, the required probability is P(273-16 < x < 273+16) = P(256.99 < x < 289.0 1)Using the Central Limit Theorem, the standard normal distribution can be used for solving the problem.The required probability is given by;P(Z < (289.01 - 273)/15.81) - P(Z < (256.99 - 273)/15.81)P(Z < 1.012) - P(Z > -1.012) = 0.8453 - 0.1569 = 0.6884. (B) For sample size of 60, sample size, n=60 sample Mean, x = $273 standard deviation of the population, σ= $100 sampling Error = Standard error of mean = σ/√n = 100/√60 = $12.9155. therefore, the required probability is P(273-16 < x < 273+16) = P(256.99 < x < 289.01). Using the Central Limit Theorem, the standard normal distribution can be used for solving the problem.The required probability is given by;P(Z < (289.01 - 273)/12.92) - P(Z < (256.99 - 273)/12.92)P(Z < 1.2389) - P(Z > -1.2389) = 0.8907 - 0.1102 = 0.7805.
C) For sample size of 81Sample size, n=81, sample Mean, x = $273 standard deviation of the population, σ= $100 sampling Error = Standard error of mean = σ/√n = 100/√81 = $11.111. Therefore, the required probability is P(273-16 < x < 273+16) = P(256.99 < x < 289.01)Using the Central Limit Theorem, the standard normal distribution can be used for solving the problem.The required probability is given by;P(Z < (289.01 - 273)/11.11) - P(Z < (256.99 - 273)/11.11)P(Z < 1.4403) - P(Z > -1.4403) = 0.9251 - 0.0749 = 0.8502.D) To ensure that the sample mean is within $16 of the population mean with 95% confidence, we need to find out the sample size that has a probability of 0.95.Probability is given by;P(-1.96 < Z < 1.96) = 0.95The Z-scores are obtained from the standard normal distribution table or calculator. Here, the probability of Z being less than -1.96 is equal to the probability of Z being greater than 1.96. The Z-score for a 95% confidence interval is 1.96. Therefore,1.96 = (289.01 - 273)/σnFor n = 152.94For n = 153, 1.96 = (289.01 - 273)/σ√153The best sample sizes are 153, and 154 so that at least a 0.95 probability that the sample mean is within $16 of the population mean.
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A cylinder is full at 471 cubic centimeters and has a radius of 5 centimeters. What is the height of the cylinder?
Answer:
the height is 6 meters
Step-by-step explanation:
v = [tex]\pi r^{2} h[/tex]
471 = 3.14(25)h
471 = 78.5h Divide both sides by 78.5
[tex]\frac{471}{78.5}[/tex] = [tex]\frac{78.5h}{78.5}[/tex]
6 = h
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What is the equivalent?
Drag the answer into the box to match the fragative.
The equivalent decimal of a fraction of 6/11 is given as follows:
0.5454.
How to obtain the equivalent decimal of a fraction?To obtain the equivalent decimal of a fraction, divide the numerator (the top number) by the denominator (the bottom number) using a calculator or long division.
The fraction for this problem is given as follows:
6/11.
The numerator and the denominator of the fraction are given as follows:
Numerator of 6.Denominator of 11.The division of 6 by 11 has a result of 0.5454, hence the equivalent decimal of the fraction is given as follows:
0.5454.
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What is the axis of symmetry?
x=
Convert to polar form y=4x^2