A political candidate has asked you to conduct a poll to determine what percentage of people support her.
If the candidate only wants a 5% margin of error at a 99% confidence level, what size of sample is needed?
Give your answer in whole people.
ME=8%=0.08
CL=90%=1.645
n=?

Answers

Answer 1

Answer:

666

Step-by-step explanation:

From this question,

a = 1-99%

a = 1-0.99

a = 0.01

5% = z(0.05) = 2.58 when we check the standard normal table

Therefore we calculate n as:

n = (z/E)²*p*1-p

Z = 2.58

E = 0.05

P = 0.5

1-p = 0.5

(2.58/0.05)²x0.5x0.5

= 51.6²x0.5x0.5

= 665.64

Therefore n is approximately 666.


Related Questions

Solve this equation for y.
3x - 5y = 12

Answers

-5y=12-3x (subtract 3x from both sides)
y = - 12-3x/5 (divide both sides by -5)
y = - 3(4-x)/5 (common term is 3)

-2y-5(6z-4y)-3z can anyone help me

Answers

Answer:

18y - 33z

Step-by-step explanation:

-2y-5(6z-4y)-3z

-2y-30z+20y-3z

-2y + 20y    +    -30z - 3z

18y - 33z

Louise Bourgeois obtained a $3,200 installment loan for a marble floor in her foyer. The
annual percentage rate is 9%. She must repay the loan in 24 months. Find the (a) monthly
payment using the formula, (b) total amount repaid, and (c) the finance charge.

Answers

(a) 157.33 (b)3776.00 (c) 576.00

how would i do this Divide. 3+5/2 ​

Answers

first you divide 5 by 2 which is 2.5, then you add 3
the final answer is 5.5

What is the fractional equivalent of repeating decimal 0.5

Answers

if it is repeating then it is 5/9 but if it is just 0.5 then 1/2

The fractional equivalent of the repeating decimal 0.5 is 5/9.

To convert the repeating decimal into a fraction, we can assign a variable, let's say x, to the repeating decimal. In this case, x = 0.5555...

Next, we multiply both sides of the equation by a power of 10 that will eliminate the repeating part.

10x = 5.5555...

Now,we subtract the original equation from the new equation to eliminate the repeating part:

10x - x = 5.5555... - 0.5555...

9x = 5

Simplifying the equation, we get:

x = 5/9

Therefore, the correct answer is A. 5/9.

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The complete question is

What is the fractional equivalent of the repeating decimal 0.5?A.5/9B.1/2C.5/99D.5/100

What is the slope of the line that contains these points?

Answers

The slope is -4
The change in y over the change in x is -8/2 from x= 1 to x= 3 and from x= 3 to x= 5. -8/2 simplifies to -4

2 T shirts
and 3 hats costs 12 pounds
5 T shirts and 4 hats cost 23 pound
Find the cost of a hat
Find the Cost
a T-shirt

Answers

the answer would be $3 :)

how do you find the area of the circle if the height is 1.5

Answers

Answer:

7.065

Step-by-step explanation:

Answer:

Step-by-step explanation:

Given Height of the circle = 1.5

Height of the circle =radius of the circle

So area of the circle=πr^2

=3.14×1.5×1.5

=7.065

Triangle CDA is the image of triangle ABC after a 180 rotation around the midpoint of segment AC. Triangle ECB is the image of triangle ABC after a 180 rotation around the midpoint of segment BC. Using what you know about the sum of the angles in a triangle, find the sum of the angles of quadrilateral ABED

Answers

Answer:

360

Step-by-step explanation:

Evaluate 4p+q/p when p= -2 and q= -3

a) -11/2
b) 9/2
c) -9/2
d) 11/2​

Answers

Answer:

-11/2

Step-by-step explanation:

11. Find the product of (4x-5) and (2x+7) in simplest form.

Answers

8x^2 + 18x - 35


(4x - 5)(2x + 7)

8x^2 + 28x - 10x - 35

8x^2 + 18x - 35

The table below represents a linear function. Determine the missing values in the table using the function rule.

Answers

Answer: In order: 25, 15, 67.

Step-by-step explanation:

In picture

х
Given that P
y
Find P when:
x = 1 and y=7
Give your answer as a fraction in its simplest form.

Answers

Answer:

y

Step-by-step explanation:

becauss

Put 1, 0, -1, -2 from least to greatest​

Answers

-2,-1,0,1

Explanation:
-2,-1,0,1 is he ascending order.

Hiking up a mountain, you notice that the air temperature drops 10°C for every 1,000 meters increase in elevation. Write a multiplication expression to represent the decrease in temperature if you hike up the mountain 3,000 meters. Then evaluate the expression and explain its meaning.

Answers

Answer:

30,000

Step-by-step explanation:

Somebody help me answer the question please

Answers

Answer:

yes i have finished it done

Step-by-step explanation:

Determine the type and number of solutions of 3x2 + 6x + 4 = 0.

Answers

3x2 + 6x + 4 = 0

This is a quadratic equation in one variable and has two solutions.

what is 20% of 60 in decimal example ​

Answers

Answer: 12

Step-by-step explanation: .2 * 60 = 12

Answer:  0.33333 (Rounded to fifth decimal place)

Step-by-step explanation:

A store sells candy at $.50, $1, $1.50, $2, and $3 per kilogram. you can see that the unit price of candies that $3 buy very inversely. What is the constant of variation?

Answers

Answer:

constant of variation = 3

Step-by-step explanation:

Given that a store is selling different candies costing  $.50, $1, $1.50, $2, and $3 per kilogram.

As given

Amount available to buy candies = $ 3

Suppose

Unit price of candies = x

Number of candies bough = y

Constant of variation = k

As we know the unit price of candies and number of candies bought vary inversely. As the unit price would increase the the number of candies bought in available amount ($3) would decrease.

So our formula to calculate formula for constant of variation would be as shown below:

k= xy →(1

Case 1

if we take unit price x to be $0.5, then we can buy 6 kg of candies in $ 3. In this case constant of variation can be found from above equation (1) as follows:

k = (0.5)(6) = 3

Case 2

if we take unit price x to be $1, then we can buy 3 kg of candies in $ 3. In this case constant of variation can be found from above equation (1) as follows:

k = (1)(3) = 3

Case 3

if we take unit price x to be $1.5, then we can buy 2 kg of candies in $ 3. In this case constant of variation can be found from above equation (1) as follows:

k = (1.5)(2) = 3

Case 4

if we take unit price x to be $2, then we can buy 1.5 kg of candies in $ 3. In this case constant of variation can be found from above equation (1) as follows:

k = (2)(1.5) = 3

Case 4

if we take unit price x to be $3, then we can buy 1 kg of candies in $ 3. In this case constant of variation can be found from above equation (1) as follows:

k = (3)(1) = 3

So, our constant of variation is 3.

4. The binomial 12x+15 is equivalent to
(1) 2(6x +15)
(3) 6(6x+9)
(2) 5(12x+3)
(4) 3(4x+5)

Answers

Answer is (4) 3(4x+5)

graph the line y=3x​

Answers

Answer:

[tex]X:9, 6, 3, 0, -1, -2, -3 \\ Y: 3, 2, 1, 0, -3, -6, -9[/tex]

What is the area of the rectangle?
60 units2
66 units2
70 units2
74 units2

Answers

it’s 66 units to 2 because you have to line up the numbers with the dot on the grid

what is the value of the expression 4 to the power of 4? ___​

Answers

Answer:

256

Step-by-step explanation:

multiply it 4time by itslef  so its like

4 time 4 times 4 times 4

I think

The value of the expression 4 to the power of 4 is 256.

What is an expression?

Expression in maths is defined as the collection of the numbers variables and functions by using signs like addition, subtraction, multiplication, and division.

Numbers (constants), variables, operations, functions, brackets, punctuation, and grouping can all be represented by mathematical symbols, which can also be used to indicate the logical syntax's order of operations and other features.

The expression will be solved as below:-

The given expression is 4⁴. The expression can be written as:-

4⁴ = 4 x 4 x 4 x 4

Multiply the value 4 four times to get the solution for the expression.

4⁴ = 16 x 16

4⁴ = 256

Therefore, the value of the expression 4 to the power of 4 is 256.

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HELP!!! this is due in 5mins...will give brainliest-
The width and length of a rectangle (in feet) are consecutive odd integers. If the length is increased by 9 feet, the area of the resulting rectangle is 80 square feet. What is the area of the original rectangle?

55
35
25

Answers

Answer:

66

Step-by-step explanation:

Answer:

35

Step-by-step explanation:

No explanation bc due in 5 mins

Drag the phrases into the box to match each expression.

Answers

You need to show a picture

Answer:

theres no image

Step-by-step explanation:

Identify the angles that each have a measure of 88°. ​

Answers

Answer:

vdnchdbcdbchdbnhdbnhvbdjvjdsvhdfnjvdjvjdv

Step-by-step explanation:

1, 3, and 8

8 is it’s corresponding angle. 1 is vertical to it and 3 corresponds with 1

Identify and write the given and the prove of the following question. "Prove that if 4x+5=6, then x=3."

Answers

Answer:

x would have to be 1.5

Step by step solution:

Given: 4x + 5 = 6

Subtraction property of equality: 4x = 6

Division property of equality: x = 1.5

57.8 divided by 81, estimate quotient

Answers

Answer:

0.71358024691 But really you can say .7

How do I factor this?

Answers

Answer:

12x(x + 1)²

General Formulas and Concepts:

Alg I

Factoring

Step-by-step explanation:

Step 1: Define expression

12x³ + 24x² + 12x

Step 2: Simplify

Factor GCF:                    12(x³ + 2x² + x)Factor GCF:                    12x(x² + 2x + 1)Factor trinomial:             12x(x + 1)(x + 1)Rewrite:                           12x(x + 1)²

In one particular suburb, there are 28 families that own a pug. If these owners make up 80% of all dog owners in this suburb, then how many dog owners are there in this neighborhood?

Answers

Answer:

60%

Explanation:

To get percentages, take the part of a population that is being specified and divided that by the whole population and multiply that value by

100%

So there are 30 people that own boxers, this is the specific population that is being compared to the whole dog-owning population, which is comprised of 50 total families. So 30 50 can be reduced to 3 5 and that gives us 0.6

When that value is multiplied by

100%, it gives us our percentage of 0.6 ⋅ 100% = 60

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