Find the Minimum Sample Size When We Want to Construct

question 13

Multiple Choice

Find the minimum sample size when we want to construct a 90% confidence interval on the population proportion for the support of candidate A in the following mayoral election. Candidate A is facing two opposing candidates. In a preselected poll of 100 residents, 22 supported her. The desired margin of error is 0.08.

• A) n = 44
• B) n = 72
• C) n = 73
• D) n = 103

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