Multiple Choice
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
Correct Answer:
Verified
Correct Answer:
Verified
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