Concept explainers
a.
To construct: The 99% confidence interval for difference in population proportion
a.
Answer to Problem 14E
The confidence interval is
Explanation of Solution
Given:
Formula used:
The formula to construct the confidence interval for difference in population proportion is:
Calculation:
The obtained Excel output is:
From the above output, the confidence interval is
b.
To explain: Whether using the above computed confidence interval it could be concluded that the difference exits between the two population proportions.
b.
Explanation of Solution
The above constructed confidence interval does not contain 0. Thus, it could be said that difference exits between the two population proportions of men and women that felt vulnerable.
Chapter 10 Solutions
The Practice of Statistics for AP - 4th Edition
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