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Question: In a random sample of n = 200 drivers, 50 individuals say that they never wear a seatbelt when driving.

a. Give a numerical value of p^ = sample proportion that never wears a seatbelt when driving.

b. Calculate the standard error of p^.

c. In a different survey of n = 400 drivers, 100 people say they never wear a seatbelt when driving. Give numerical values for and the standard error of p^.

Statistics and Probability, Statistics

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