Concept explainers
To construct: The confidence interval for the difference in population proportions of college women and men.
Answer to Problem 31E
The correct option is (b).
Explanation of Solution
Given:
Formula used:
The formula to construct the confidence interval for difference in population proportion is:
Calculation:
Here,
From the z-table, the z-score at 95% level of confidence is 1.96.
So, the confidence interval can be computed as:
So, the correct option is (b).
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