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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 P^{^} and the standard error of P^{^}.

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Statistics and Probability, Statistics

Category:- Statistics and Probability
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