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): OA. Change the confidence level to 68%. OB. Quadruple the sample size. OC. Change the confidence level to 99.7%. OD. Double the sample size.

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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):
OA. Change the confidence level to 68%.
OB. Quadruple the sample size.
OC. Change the confidence level to 99.7%.
OD. Double the sample size.
OE. Decrease the sample proportion by half.
Transcribed Image Text: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): OA. Change the confidence level to 68%. OB. Quadruple the sample size. OC. Change the confidence level to 99.7%. OD. Double the sample size. OE. Decrease the sample proportion by half.
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