Question: Based on a random sample of 50, a 95% confidence interval for the population proportion was computed. Holding everything else constant, which of the following

Based on a random sample of 50, a 95% confidence interval for the population proportion was computed. Holding everything else constant, which of the following will reduce the length of the confidence interval by half? (CHECK ALL THAT APPLY):

A.Change the confidence level to 99.7%.

B.Decrease the sample proportion by half.

C.Quadruple the sample size.

D.Change the confidence level to 68%.

E.Double the sample size.

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