Answer:
Equation: y = -0.5x + 2.
Step-by-step explanation:
The football team at a high school wants to conduct a survey of student opinion. The coaches want to begin with a simple random sample of 200 students. Which of the following survey methods will produce a simple random sample?
Survey the first 200 students to arrive at school in the morning
Survey every 20th student entering the school gym until 200 students are surveyed
Number the students on the school roster. Use a table of random numbers to choose 200 students from this roster for the survey.
Use random numbers to choose 50 each of freshmen, sophomores, juniors, and seniors
Number the gym seats. Use a table of random numbers to choose seats and interview the students until 200 have been interviewed.
Answer: Number the students on the school roster. Use a table of random numbers to choose 200 students from this roster for the survey.
Step-by-step explanation:
A truly random sample would be one that gave every member of the population the same chance to be represented. This is why the method that will produce a simple random sample is one where the official school rooster is used and 200 students are selected randomly. This way every student in the school gets an equal chance of representation.
The first option is not random as it excludes students arriving after the first 200.
The second and last options will not be representative nor will it be random because it does not account for students who do not use the gym.
The fourth option limits the number of people that may be picked per class so reduces the chance of simple random selection across the school. This is stratified instead.
What is x divided by 3?
Answer:
X can be any number it' a variable
Step-by-step explanation:
A regular piece of ice has a temperature of 32ºF. A piece of dry ice has a temperature of -109ºF. Which is the true statement?
The regular ice is colder than the dry ice.
The difference in temperature is less than 100ºF.
The dry ice is colder than the regular ice.
The dry ice has a greater temperature
Answer:
C
Step-by-step explanation:
The Dry Ice Is Colder Then the Regular Ice. By 77°F.
Hope This Helps! Pls Rate Brainiest!
-Aslina
Read Edward Corsi’s quotation from the book Immigrant Kids by Russell Freedman. The writer Angelo Pellegrini has recalled his own family’s detention at Ellis Island: We lived there for three days - Mother and we five children, the youngest of whom was three years old. Because of the rigorous physical examination that we had to submit to, particularly of the eyes, there was this terrible anxiety that one of us might be rejected. And if one of us was, what would the rest of the family do? This quotation adds credibility to the text because his mother lived on Ellis Island with her children, and their experience agrees with Freedman’s statement that families were separated. he lived at Ellis Island for three days, and his experience agrees with Freedman’s statement that families were afraid of the health examinations. he was a writer who wrote about Ellis Island and described the feelings an immigrant might have during the physical exams. he lived at Ellis Island for three days, a
Answer:
he lived at Ellis Island for three days, and his experience agrees with Freedman’s statement that families were afraid of the health examinations
Step-by-step explanation:
In the book immigrant kids, freeman gives readers a glimpse of what it was like to be new and young America. It talked about the journey and what life is like as soon as they arrive.
Pallegrini's experience about rigorous physical examination and the anxiety that followed agrees with freedman's statement about people being afraid of health examinations.
Answer:
he lived at Ellis Island for three days, and his experience agrees with Freedman’s statement that families were afraid of the health examinations
Step-by-step explanation:
i know all that touches the sunlight
what is a positive - negative
Answer:
Numbers can either be positive or negative. ... Adding and multiplying combinations of positive and negative numbers can cause confusion and so care must be taken. Addition and Subtraction. Two 'pluses' make a plus, two 'minuses' make a plus. A plus and a minus make a minus.
Arrivals at a parking lot are assumed to follow the Poisson distribution. The average arrival rate is 2.8 per minute. What is the probability that during a given minute no cars will arrive
Answer:
[tex]P(x = 0) = 0.061[/tex]
Step-by-step explanation:
Given
[tex]Average = 2.8[/tex]
Required
Determine the probability that no car will arrive.
Since it is a Poisson distribution, the required probability is:
[tex]P(x) = \frac{e^{-m}m^x}{x!}[/tex]
Where
[tex]m = average = 2.8[/tex]
In this case;
[tex]x = 0[/tex]
So:
[tex]P(x) = \frac{e^{-m}m^x}{x!}[/tex]
[tex]P(x = 0) = \frac{e^{-2.8}2.8^0}{0!}[/tex]
[tex]P(x = 0) = \frac{e^{-2.8}*1}{1}[/tex]
[tex]P(x = 0) = e^{-2.8}[/tex]
[tex]P(x = 0) = 0.06081006262[/tex]
[tex]P(x = 0) = 0.061[/tex] --- Approximated
Harvey worked 36 hours this week. He earns $28.46 an hour. How much did he earn this week
Answer:
$1,024.56
Step-by-step explanation:
Simple math, So what you would do to find this answer would be taking the amount of money hes earning an hour and times that by how many hours he worked that week. so $28.46 x 36 = $1,024.56
Answer:
1024.56
Step-by-step explanation:
28.46
x 36
___________
17076
+ 85380
____________
1024.56
n-40
----------
4
what is n-40 divided by four
If you spent 15 minutes exercising everyday, for a year nonstop,
¿how many minutes of exercise would you do?
A rope for zip lining is tied between two parallel trees. The rope is taut, forming a straight line. What is m<2?
Answer:
72°.
Consecutive interior angle
Step-by-step explanation:
The complete question is shown below
The consecutive interior angle theorem states that if two parallel lines are cut by a transversal line, the pair of interior angles formed are supplementary (that is they sum up to 180°).
Hence since the two trees are parallel and the rope forms a transversal hence they form an interior angle:
m∠2 + 72° = 180° (consecutive interior angles)
Add -72 to both sides and then simplify:
m∠2 + 72 -72 = 180 - 72
m∠2 = 108°
Can someone help with the picture please?
Answer:-12 degrees ferenheight
Step-by-step explanation:
Just add 13 to -25 to find the temp change.
Thus, 13-25= -12 degrees F
Simplify 83.63 -2.89 x (4.9 - 2.9) squared.
the other one is 27
Hii Please help this is so hard
Answer:
1 1/2 miles
Step-by-step explanation:
1 1/2 miles
Hey! Hope your having a amazing day! Can you please help me and answer this questions? I need this fast! Thanks! ;( (Integers!)
Answer:
19
Step-by-step explanation:
Simple, just add 34 and -15 and you should get the net (average) gain. :)
A storm door is made using two sheets of aluminum with a layer of
insulation between them. Each sheet of aluminum is 1/16 in. thick. The
insulation layer is 3/4 in. thick. How thick is the door?
A 1-unit by 4-unit rectangle is shown below
12. Dominic drives a taxi. He charges a $2 flat fee plus $1.50 per mile.
The table represents f(x), a function that can be used to predict the
total cost of any trip in Dominic's taxi.
Answer:
The y-intercept represents the flat fee.
Step-by-step explanation:
The y-intercept on the graph would be the point at which the line cuts across or intercepts the y-axis. At this point, the value of x (miles travelled) would be 0. The y-intercept in this case, would be the flat fee which is given as $2.
At x = 0, f(0) = 2.
The y-intercept represents the flat fee on the graph of f(x).
If the population proportion p = 0.63, what is the probability of getting correct answers on less than 60% of the questions?
Complete question:
An exam consists of 50 multiple choice questions. Based on how much you studied, for any given question, you think you have a probability of 0.63 of getting the correct answer. Consider the sampling distribution of the sample proportion of correct questions out of 50.
If the population proportion p = 0.63, what is the probability of getting correct answers on less than 60% of the questions?
Answer:
the probability of getting correct answers on less than 60% of the questions is 0.33
Step-by-step explanation:
Given;
number of samples, n = 50
population proportion, P = 0.63
For normal distribution;
np ≤ 60 and n(1-p) ≤ 60
(50 x 0.63) ≤ 60 and (1-0.63) ≤ 60
31.5 ≤ 60 and 22.2 ≤ 60
The condition is satisfied, then mean of the distribution is given by;
x = p = 0.63
The standard deviation is given by;
[tex]\sigma_p =\sqrt{\frac{P(1-P)}{n} }\\\\ \sigma_p =\sqrt{\frac{0.63*0.37}{50} }\\\\ \sigma_p = 0.068[/tex]
For a correct answers on less than 60% of the questions
Upper boundary = 0.6
lower boundary = 0
Thus, the probability is given by;
P (p' < 0.6) = 0.33
Therefore, the probability of getting correct answers on less than 60% of the questions is 0.33
fran drank 19/20 liter of juice how many quarts of juice did she drink (1 L =1.06qt). set up a proportion and solve using means of extremes
Given :
Fran drank 19/20 liter of juice.
1 L = 1.06 qt.
To Find :
How many quarts of juice did she drink.
Solution :
It is given that :
[tex]1 \ L=1.06\ qt\\\\1=\dfrac{1.06\ qt}{L}[/tex]
Now, amount of water he drink :
[tex]\dfrac{19}{20}\times 1 \ L\\\\\dfrac{19}{20}\times 1.06\ \dfrac{qt}{L}\times L\\\\\dfrac{19}{20}\times 1.6 \ qt\\\\1.52\ qt[/tex]
Hence, this is the required solution.
PLEASE HELP!! Are triangles A,B,C and D acute obtuse or right angles?
Answer:
right angle
Step-by-step explanation:
it has a 90 degree angle so its a right angle
Which statement is true about the value of the expression below? (-2^3)^-2
. It is between -1 and 0
.it is less than -1
.it is between 0 and 1
. It is greater than 1
Answer:
it is between 0 and 1
Step-by-step explanation:
Your statement balance is $433.97. You have an outstanding check for $46.78 and an
outstanding deposit for $235.00. What is your adjusted balance?
A) S245.75
B) $387.19
C) $622.19
D) $668.97
Find the midpoint of AB if a (-1,7) and B (11,-1)
Answer:
(5, 3)Step-by-step explanation:
Given Points A(-1,7) and B (11,-1)To findMidpoint of ABSolutionUsing midpoint formula
x = (-1 + 11)/2 = 10/2 = 5y = (7 -1)/2 = 6/2 = 3Midpoint is (5, 3)
Answer:
mid point = 5, 3Step-by-step explanation:
A(-1, 7) B(11, 1)
use the midpoint formula:
mid point = (x₁ + x₂) , (y₁ + y₂)
2 2
= (-1 + 11) , (7 - 1)
2 2
mid point = 5, 3
Same set up as the problem
to the left. Fill in the blanks.
25
39
Answer:
In a quiz, positive marks are given for correct answers and negative marks are ... a − (−b) = 21 − (−18) = 21 + 18 = 39 ... (i) He jumps 3 steps down and then jumps back 2 steps up.
Step-by-step explanation:
make me as brain liest
Triple the sum of x and five amounts to the product of two and x.
Answer: 15
Step-by-step explanation:
3(x+5)=2x
3x+15=2x
15=x
Consider the following information about travelers (based partly on a recent Travelocity poll): 40% check work e-mail, 30% use a cell phone to stay connected to work, 25% bring a laptop with them, 23% both check work e-mail and use a cell phone to stay connected, and 51% neither check work e-mail nor use a cell phone to stay connected nor bring a laptop. Finally, 88 out of every 100 who bring a laptop check work e-mail, and 70 out of every 100 who use a cell phone to stay connected also bring a laptop.
(a) What is the probability that a randomly selected traveler who checks work e-mail also uses a cell phone to stay connected?
(b) What is the probability that someone who brings a laptop on vacation also uses a cell phone to stay connected?
(c) If a randomly selected traveler checked work e-mail and brought a laptop, what is the probability that s/he uses a cell phone to stay connected?
Step-by-step explanation:
I defined the following events:
J = travellers check email
K = they use a cell phone to stay connected
M = they have a laptop alongside
P(J) = 0.40
P(K) = 0.30
P(M) = 0.25
P(J n K) = 0.23
P(J U K U M)' = 0.51
P(J|M) = 0.88
P(M|K) = 0.70
A.
We are to find probability of K|J
P(JnK)/p(J)
= 0.23/0.40
= 0.575
B.
P(K|M)
= P(KnM)/P(m)
= 0.21/0.25
= 0.84
C.
P(J U K U M) = 1 - p(J U K U M)'
= 1-0.51
= 0.49
P(JnM) = p(J|M)p(M)
=0.88x0.25
= 0.22
P(JnKnM) = 0.49-0.40-0.30-0.25+0.23+0.22+0.21
= 0.20
P(K|JnM) = P(JnKnM)/p(JnM)
= 0.20/0.22
= 0.909
five ninths and four sixths
Answer:
5/9 & 4/6Step-by-step explanation:
Hope this helps! <3
What’s 890,000,090 in scientific notation
Answer:
[See Below]
Step-by-step explanation:
[tex]Hey~There![/tex]
________________________
➜ Turn into scientific notation :
[tex]890,000,090=8.9000009*10^{8}[/tex]________________________
So the answer is [tex]\bold8\bold.\bold9\bold0\bold0\bold0\bold0\bold0\bold9\bold*\bold1\bold0^{\bold8}[/tex].
________________________
[tex]Hope~this~helps~Mate!\\-Your~Friendly~Answerer,~Shane[/tex] ヅ
Answer:
The number 890000090 can be written as 8.90 × 10^8 in scientific notation.
Point R(x, 4) and point T (5, 13) are points that lie on a line that had a slope of 3/2. What is the value of x?
Answer:
Step-by-step explanation:
Nxjxhxnddjndzjzjzjzjzjzj