Question

Katrina wants to estimate the proportion of adultAmericans who read at least 10 books last year. To do so, she obtains a simple random sample of 100 adult Americans and constructs a 95% confidence interval. Matthew also wants to estimate the proportion of adult Americans who read atleast 10 books last year. He obtains a simple random sample of 400 adult Americans and constructs a 99% confidence interval.Assuming both Katrina and Matthew obtained the same point estimate, whose estimate will have the smaller margin of error? Justify your answer.


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  • CreatedApril 28, 2015
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