Question: Seat belt use: planning a study. How large a sample would be needed to obtain S T E P margin of error 0.05 in the

Seat belt use: planning a study. How large a sample would be needed to obtain S

T E

P margin of error ±0.05 in the study of seat belt use among Hispanic females? Use the ˆp from Exercise 19.40 as your guess for the unknown p.

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