. A polling organization announces that the proportion of American voters who favor congressional term limits is 64%, with a 95% confidence margin of error of 3%. If the opinion poll had announced the margin of error for 80% confidence rather than 95% confidence, this margin of error would be (a) 3%, because the same sample is used. (b) less than 3%, because we require less confidence. (c) less than 3%, because the sample size is smaller. (d) greater than 3%, because we require less confidence. (e) greater than 3%, because the sample size is smaller.

Answers

Answer 1

When  C.I. is given as 80% then the margin of error will be 1.9591% as calculated from the given data.

We are given that the first margin of error (MOE) is 3%.

Also,  confidence interval

first C.I.=95%

second C.I.=80%

Therefore , MOE at 80% will be ,

The formula for proportion is given as (P),

P=x/n , here 64%.

The values are same or constant as in general, this means standard deviation is also constant

Now formula for MOE is given by

MOE = Z x ( SD ) / √n

where ,  Z is value for confidence interval

MOE ∞ Z-value

So we can say that ,

MOE = k x Z ( where k = proportionality constant).

So , for 95 % Z=1.96 and for 80% Z=1.28

MOE then calculated will be , 1.95% .

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Related Questions

Select the correct answer. Which value in this data set is an outlier? 4, 5, 1, 7, 4, 5, 8, 9, 6, 5, 4, 9, 7 A. 1 B. 2 C. 3 D. 9

Answers

So, on solving the provided question, we can say that the outlier from the following data set will be 8.

What is outlier?

Outliers are data points that deviate from the distribution's typical pattern. a value that is "outside" of the record's typical range (either significantly lower or substantially greater). For instance, both 3 and 85 are "outliers" when the scores are 25, 29, 3, 32, 85, 33, 27, 28, etc. Move away. Look for values that are significantly larger or significantly smaller than all other values to identify outliers. Because it is significantly smaller than all other values, Value 4 is an outlier. An observation that differs unusually from other values in a population sample taken at random is referred to as an outlier.

outlier = 4, 5, 1, 7, 4, 5, 8, 9, 6, 5, 4, 9, 7

outlier = 8

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The Seattle Space Needle casts a 67-meter shadow. If the angle of elevation
from the tip of the shadow to the top of the Space Needle is 70°, how tall
the Space Needle? Round to the nearest meter.

Answers

Answer:

The space needle is 62.95 m tall.

Step-by-step explanation:

Given that,

The height of the shadow, h = 67 m

The angle of elevation  from the tip of the shadow to the top of the Space Needle is 70°.

We need to find the height of the space needle.

The shadow of space needle is hypotenuse of right angled triangle. Let the height of the space needle is x m. Using trigonometry,

[tex]\sin\theta=\dfrac{x}{h}\\\\x=h\times \sin\theta\\\\x=67\times \sin(70)\\\\x=62.95\ m[/tex]

So, the space needle is 62.95 m tall.

One of the legs of a right triangle measure 7 centimeters in the other leg measures 3 centimeters. Find the measure of the hypotenuse.

Answers

Answer:7.6

Step-by-step explanation:

What are all the names to a polygon that has 2 pairs of parallel sides 2 pairs of sides equal in length and 2 acute and 2 obtuse angles?

Answers

Answer:

a trapezoid

Step-by-step explanation:

A trapezoid is a convex quadrilateral. A trapezoid has at least on pair of parallel sides. the parallel sides are called bases while the non parallel sides are called legs

Characteristics of a trapezoid

It has 4 vertices and edges

If both pairs of its opposite sides of a trapezoid are parallel, it becomes a parallelogram

Area of a trapezoid =   x (sum of the lengths of the parallel sides) x height

Perimeter =  sum of lengths of sides of a trapezoid

a) If 8* =
1
64
find the value of x.

Answers

Answer:

x = -2

Step-by-step explanation:

[tex]8^{x}[/tex] = [tex]\frac{1}{64}[/tex]

So to solve exponent.

8x=  1 /64

log(8x)=log( 1/ 64 ) (Take log of both sides)

x*(log(8))=log( 1 /64 )

x= log( 1 /64 ) /  log(8)

x=−2

Hope this helps!

The dimensions of a right rectangular prism are 0.25 m, 0.36 m, and 0.14 m.
What is the volume of the prism?

Answers

Answer:  I would multiply the lxwxh and do 0.25 x 0.36 x 0.14 which in all would give you 0.0126 m2.

Step-by-step explanation:

Please solve this or find an answer key.

Answers

Answer:

1 - 2 1/4

2 - 2 2/4 (simplified) 2 1/2

3 - 7 3/11

4 - 2 1/7

5 - 7 3/8

6 - 4 3/10

7 - 6 2/8 (simplified) 6 1/4

8 - 6 10/12 (simplified) 6 5/6

9 - 6 2/4 (simplified) 6 1/2

10 - 4 1/2

11 - 5 1/8

12 - 3 2/3

13 - 6 5/12

14 - 2 3/5

15 - 5 2/3

_______________________________________

1 - 42/5

2 - 20/3

3 - 27/5

4 - 52/7

5 - 10/3

6 - 17/3

7 - 40/11

8 - 28/5

9 - 29/3

10 - 25/3

11 - 86/9

12 - 11/3

13 - 15/2

14 - 5/2

15 - 38/7

What is an equivalent function?

Answers

Equivalent function has the same domain and range. Equivalent and equal terms are not the same both have different meanings in mathematics.

A function is said to be equal if its Domain and Range are identical. Complete solution, step by step: A and B should be two sets. Now, by function, we mean a rule that guarantees that f(a)=b exists for all a. As a result, set A is referred to as the Domain of File and set B as the Range Off.

Despite being comparable to 1 + 1, 2 is believed to be equal to 2. When two items or amounts are exactly the same, as when 12 is equal to 12, yet 12 is equivalent to 2/4 since they reflect the same value, we can say that they are equal.

In mathematics, an equivalent can be defined in one of two ways. This is thus because there are various definitions for the concept of equivalent in mathematical theory. Equivalent refers to the mathematical notion that distinct terms and expressions having a similar value are treated equally.

Equivalent is not the same as equal in mathematics. While equivalent indicates similar but not the same, equal means the same in all respects.

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MUST ANSWER QUESTION!


A palindrome is a number that is read the same backwards as forwards, for instance 12321. How many 5-digit palindromes with different neighboring digits are there? (Note that 01210 is not considered a 5-digit number and the palindrome 52525 has different neighboring digits. )

Answers

There are 24 ,5-digit palindromes with different neighboring .

Define probability.

A probability is a numerical representation of the likelihood or chance that a specific event will take place. Both proportions ranging from 0 to 1 and percentages ranging from 0% to 100% can be used to describe probabilities.

Can probability be greater than 1?

No, it is always between 0 t0 1.

Such a palindromic number should be  abcba  

2a+2b+c=14

Thus  c has to be even and we need

a+b=14−c/2 and we can choose for  a any value from  1 to  (14−c)/2

Thus the number of such palindromic numbers is

7+6+5+4+3=25

starting from  c=0 up to  c=8

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Can some one help me with this question its hard :( down below ill give brainliest

Answers

Answer:

D

Step-by-step explanation:

Cuz is negative u need the bracket

Simplify algebraic expression

Answers

Answer: 40

Step-by-step explanation:

   We will substitute x = 8 and simplify the given expression.

 Given:

6x-x

 Substitute:

6(8) - 8

 Multiply:

48 - 8

 Subtract:

40

The answer to the equation is 40.
6x-x
6(8)-x
48-x
48-8=40

Hope this helps!

a large interquartile range shows the data is

Answers

A large interquartile range shows the range in values of the central 50% of the data.

A submarine travels 168 miles in 7 hours. At this rate, how many miles will the submarine travel in 2 1/2

Answers

Answer:

Step-by-step explanation:

(168 mi)/(7 hr) = (24 mi)/hr

(2.5 hr) × (24 mi)/hr = 60 mi

please help me do I will really appreciate it so much :)

Answers

Answer:

ZYX=39

ZXY=64

X=1

Step-by-step explanation:

an arithmetic sequence has these properties a1=2 an=an-1+5

what are the first four terms in the sequence

a. 2,5,7,12
b.2,5,10,15
c.2,7,12,17
d.2,7,9,14

Answers

The answer is d hope it helped

Parker could pay for 45% of his college tuition with his scholarship. The remaining $10,500 he paid for with a student loan. What was the cost of Parker's tuition? Show your work

Answers

The cost of parker's tuition is $19,090.9

How to calculate the cost of parker's tuition?

Parker could pay 45% of his college tuition with his scholarship

He paid for the remaining $10,500 with a student loan

Therefore the cost of parker's tuition can be calculated as follows

100% - 45%

= 55%

let y represent the cost of parker's tuition

55y/100= 10500

0.55y= 10500

y= 10500/0.55

y= 19,090.9

Hence Parker tuition cost is $19,090.9

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23. We are laying new carpet in the classroom which is 84 square feet. If the width is 5 feet
more than the length, what are the dimensions of the floor?/

Answers

Let l be the length of the classroom in feet, and w be the width of the classroom in feet. We know that l + 5 = w and l * w = 84.

We can use these two equations to solve for the length and width of the classroom.

First, we can solve the second equation for l:

l = 84 / w

Substituting this expression for l into the first equation gives us:

84 / w + 5 = w

Expanding the left side of the equation gives us:

84 / w + 5 = w

84 / w = w - 5

84 = w^2 - 5w

w^2 - 5w - 84 = 0

This is a quadratic equation that we can solve using the quadratic formula:

w = (5 + sqrt(5^2 - 4 * 1 * -84)) / 2 * 1

= (5 + sqrt(25 + 336)) / 2

= (5 + sqrt(361)) / 2

= (5 + 19) / 2

= 24 / 2

= 12

Now that we know the value of w, we can substitute it back into the equation l = 84 / w to find the value of l:

l = 84 / 12

= 7

Therefore, the dimensions of the classroom are 7 feet by 12 feet.

Which equation describes a line with a slope of 2/5 that passes through (0,4)

Answers

Answer: y = 2/5x + 4

Step-by-step explanation:

       We will write a point-slope form equation for this line, then simplify it into a slope-intercept form equation.

Given point-slope form:

➜ m is the slope

➜ (x1, y1) is the point given

       y - y1  = m(x - x1)

Substitute values in:

       y - (4)  = (2/5)(x - (0))

Distribute 2/5:

       y - 4  = 2/5x - 0

Add 4 to both sides of the equation:

       y = 2/5x + 4

Step-by-step explanation:

since we have the slope and a point, we can start with the point-slope form

y - y1 = a(x - x1)

a is the slope, (x1, y1) is the given point.

y - 4 = (2/5)(x - 0) = 2x/5

y = 2x/5 + 4

or

y = (2/5)x + 4

Question
A hot-air balloon is 1200 feet off the ground and its altitude is slowly changing at a constant rate of −712 feet per second.

How many seconds, s, will it take for the balloon to drop to below 310 feet?

Drag and drop a symbol and value to correctly complete the solution to this inequality.

Put responses in the correct input to answer the question. Select a response, navigate to the desired input and insert the response. Responses can be selected and inserted using the space bar, enter key, left mouse button or touchpad. Responses can also be moved by dragging with a mouse.
s Response area Response area

Answers

The number of seconds, it takes for the balloon to drop below 310 feet is 1.25 seconds

How to calculate the expression?

To find out how many seconds it will take for the balloon to drop to below 310 feet, we need to use the information provided and some basic algebra.

Given the starting altitude of the balloon, we know:

h(0) = 1200 feet

The rate of change of the altitude, or the speed at which the altitude is changing, is given as:

dh/dt = −712 feet/second

This tells us that the altitude of the balloon is decreasing at a rate of 712 feet per second. To find out how long it will take for the altitude to drop to 310 feet or less, we can set up the following equation:

h(t) = h(0) + dh/dt * t

We know that h(t) must be less than or equal to 310 feet, so we can substitute this value in for h(t) and solve for t:

310 = 1200 + (−712) * t

This equation can be solved for t by isolating t on one side and then dividing both sides by −712:

t = (1200 - 310) / −712

t = (890) / (−712)

t = 1.25 seconds.

So it will take 1.25 seconds for the balloon to drop below 310 feet.

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Coconut palm trees can reach heights of up to 100 feet. Suppose you are lying on the beach at a distance of 74 feet from a 58-ft tall palm tree. What is the angle of elevation from your position to the top of the tree? ​

Answers

The angle of elevation of the coconut palm tree from me is [tex]38\x^{o}[/tex].

What is angle of elevation ?

The angle of elevation is the angle created between the line of sight and the horizontal. The angle created is an angle of elevation if the line of sight is upward from the horizontal line.

the angle of elevation is defined as "the angle created between the horizontal line and the line of sight when an observer looks upwards." It is always higher than the observer and at a larger angle. When a person stares downward, they create an angle of depression, which is the opposite of an elevation angle. When studying heights and distances in trigonometry, it is crucial to understand the angle of elevation and depression. Angles, horizontal lines, and line of sight are the three main terms related to the angle of elevation.

Height of the palm tree is 58 ft

Distance at which I am standing from the tree is 74 ft

As per sum

[tex]tan \theta = \frac{58}{74}[/tex]

[tex]\theta = tan\x^{-1} (\frac{58}{74})[/tex]

[tex]\theta\\[/tex] = [tex]38\x^{o}[/tex]

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does anyone know how to do this?

Answers

Answer:

no lol

Step-by-step explanation:

Answer:

m DE=60°

Step-by-step explanation:

OR≅OS

in Δ STW,

SW=TW

TS=SW=TW

m∠TSW=60°

m DE= 60°

༄❁༄❁༄❁༄❁༄

hope it helps...

have a great day ! ! !

A circular sector has an 8.26-inch radius and a 12.84-inch arc length. There is another sector that has the same area and the same perimeter. What are its measurements

Answers

The dimensions of a different sector with the same area and perimeter are An alternative sector's radius is 6.42 inches. An alternative sector has an arc length of 16.52 inches.

What does an arc's length signify?

The distance between two places along a segment of a curve is known as the arc length.

Sector radius, r = 8.26 inches

Sector arc length = 12.84 inches

Sector perimeter = 2r + length of the arc

The specified sector's perimeter is equal to 2 x 8.26 x 12.84 x 29.36 inches.

The circle's circumference is 2 + 8.26 + 16.52.

The specified circle's area is A = 8.262 * 68.2276.

Sector area, A = 53.0292 inch2

Consequently, we have;

2R plus A equals 29.36 inches

A·R = 53.0292 × 2

that provides;

R² + 53.0292 = 14.68·R

R² - 14.68·R + 53.0292 = 0

using a graphing calculator to factor yields;

(R - 6.42)·(R - 8.26) = 0

R = 6.42 or R = 8.26

R = 8.26 is the measurement for the first sector.

Due to the distinctions between the sectors, we have;

R = 6.42 inches is the radius of the other sector.

The length of the arc, A = 29.36 - 2R

∴ A = 29.36 - 2 × 6.42 = 16.52

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Find the measure of the missing angles.

Answers

Answer:

d=52 e=77 f=51

Step-by-step explanation:

The opposite side of 52 is 52 because they are intersecting 1dk, same thing with 77, and when you have both of those just add all the angles and subtract it from 360

Answer:

d = 52

e = 77

f = 51

Hope this helps!

What is the first thing you do when giving a problem with a number line

Answers

Answer:

You first find the number on the number line, and go from there.

Step-by-step explanation:

If it's addition (Ex. 4+12), you would start at 4, and move right 12 spaces. Since the answer is 16, you would land on the 16th space. Think of it as a board game...

If you roll a 6, and you are on space number 4, you move up 6 spaces. This would represent addition. It's the opposite if you land on a "Move Back" space. You land on that space, and you roll a 4. If you are on the 6th space, you go back to the second space. This would represent subtraction. Hope this helps! Mark Branliest, pls!

A line passes through the point (-4,-3) and has a slope of -3.

Answers

Answer:

your answer would be y=-3x-15

Step-by-step explanation:

X + 15 _> 64.5 in inequality from

Answers

Answer:

X ≥ 49.5

Step-by-step explanation:

X + 15 ≥ 64.5

Subtract 15 from both sides

X ≥ 49.5

So, the answer is X ≥ 49.5

Mhanifa please help! This is already late and I need it done ASAP!

Answers

Answer:

Given all right triangles

Use Pythagorean to find the missing side:

a² + b² = c², where c- hypotenuse

=1=

x² = 6² + 3² = 45x = √45x = 6.7

=2=

x² = 12² + 5² = 169x = √169x = 13

=3=

x² = 2² + 5² = 29x = √29x = 5.4

Adam is trying to spot a meteor. The probability he will see one in the next 10 minutes is 0.56.
What are the odds in favor of Adam seeing a meteor in the next 10 minutes?

Answers

Answer: The odds in favor of an event happening are the ratio of the probability of the event happening to the probability of the event not happening. To find the odds in favor of an event, you can use the formula:

Odds in favor = probability of event occurring / (1 - probability of event occurring)

In this case, the event is that Adam will see a meteor in the next 10 minutes. The probability that this event will occur is 0.56. Therefore, the odds in favor of this event occurring are:

Odds in favor = 0.56 / (1 - 0.56)

= 0.56 / 0.44

= 1.27

So, the odds in favor of Adam seeing a meteor in the next 10 minutes are 1.27 to 1.

It means that Adam is 1.27 times more likely to see a meteor in the next 10 minutes than not seeing one.

Step-by-step explanation:

The odds in favor of Adam seeing a meteor in the next 10 minutes are 14 : 11

Math question!!!!!!!!!!

Answers

Answer:

A recursive sequence , also known as a recurrence sequence, is a sequence of numbers indexed by an integer and generated by solving a recurrence equation. The terms of a recursive sequences can be denoted symbolically in a number of different notations, such as , , or f[ ], where. is a symbol representing the sequence.

Step-by-step explanation:

I hope this helps?

Answer:

A recursive sequence ,  a sequence of numbers indexed by an integer and generated by solving a recurrence equation.

2.) Una pizza cuesta $12. Alfred compró 4_2/3 pizzas. ¿Cuanto gastara le sobra de $60? a.) $56 b.) $14 c.) $4​

Answers

Answer:

$56 or $4 left over from $60

$ 56 o $ 4 sobrantes de $ 60

Step-by-step explanation:

4 2/3 pizzas would cost $56

4 2/3 pizzas costarían $ 56

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