Question 8

Suppose a 90 percent confidence interval to estimate a population proportion was calculated from a sample proportion of 18 percent and a margin of error of 4 percent. What is the width of the confidence interval?

A

2

percent

4 percent

e percent

8 percent

16 percent

36 percent

36 percent

Question

Matias Hays

Mathematics

3 September, 02:37

Question 8

Suppose a 90 percent confidence interval to estimate a population proportion was calculated from a sample proportion of 18 percent and a margin of error of 4 percent. What is the width of the confidence interval?

A

2

percent

4 percent

e percent

8 percent

16 percent

36 percent

36 percent

+4

Answers (1)

Know the Answer?

Nolan Barr · Answer 1

The answer is 8%

From the given information, the sample proportion is 18% and a margin of error is 4 percent.

Then, a 90% confidence interval to estimate the population proportion is

(18 + / - 4)

(18-4, 18+4)

(14%, 22%)

22-14 = 8

Question 8Suppose a 90 percent confidence interval to estimate a population proportion was calculated from a sample proportion of 18 percent and a margin of error of 4 percent. What is the width of the confidence interval?A2percent4 percente percent8 percent16 percent36 percent36 percent