Population Proportion

Question 1

Which confidence interval represents the estimated proportion of people willing to pay higher prices for gas?

Revolt · Accepted Answer

D: between 55.3% and 62.7%

Question 2

If the same confidence interval is used, and the same value for is found for both samples, Margie’s margin of error will be David’s margin of error.

Revolt · Accepted Answer

B: less than

Question 3

The value of 3% represents the .

Revolt · Accepted Answer

B: margin of error

Question 4

The sample size in this problem is students.

Revolt · Accepted Answer

B: 800

Question 5

In the formula n = (1 – ) • , the value of (1 – ) is .

Revolt · Accepted Answer

C: 0.59

Question 6

Estimate the population proportion as .

Revolt · Accepted Answer

C: 0.31

Question 7

When n is calculated, the result after rounding is .

Revolt · Accepted Answer

A: 1,033

Question 8

(1 – ) = .

Revolt · Accepted Answer

C: 0.69

Question 9

When the margin of error is calculated using the formula E = z* , to the nearest tenth of a percent, the result is %.

Revolt · Accepted Answer

A: 4.2

Population Proportion Answers