Question

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

Answer 1

Answer: 8%

Explanation:

Answer 2

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