Power Computing wants to use simple random sampling to estimate the average repair time for the Apple iPods that are refurbished by the company.To build a 99% confidence interval estimate that is no wider than plus or minus 5 minutes, how many repair times would you have to include in the sample? Assume a pilot sample gives an estimate of 63 minutes for the population standard deviation.
A)1121
B)1057
C)1231
D)1168
E)1348

Question

Quizplus · Accepted Answer

The Answer of Power Computing wants to use simple random sampling to estimate the average repair time for the Apple iPods that are refurbished by the company.To build a 99% confidence interval estimate that is no wider than plus or minus 5 minutes, how many repair times would you have to include in the sample? Assume a pilot sample gives an estimate of 63 minutes for the population standard deviation.
A)1121
B)1057
C)1231
D)1168
E)1348

Power Computing Wants to Use Simple Random Sampling to Estimate