Phoebe has a theory that older students at her high school are more likely to bring a bag lunch than younger students, because they have grown tired of cafeteria food. she takes a simple random sample of 80 sophomores and finds that 52 of them bring a bag lunch. a simple random sample of 104 seniors reveals that 78 of them bring a bag lunch. letting p1= proportion of sophomores who bring a bag lunch, and p2= proportion of seniors who bring a bag lunch, phoebe tests the hypotheses

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general 11 months ago 2306

Katrina wants to estimate the proportion of adults who read at least 10 books last year. to do​ so, she obtains a simple random sample of 100 adults and constructs a​ 95% confidence interval. matthew also wants to estimate the proportion of adults who read at least 10 books last year. he obtains a simple random sample of 400 adults 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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general 11 months ago 7239