The standard deviation of the waiting time of the 25 persons waiting in an ATM queue was found to be 4 hours. The standard error of the estimator of the population mean for a simple random sample with replacement of size 25 persons will be:
A. 48 minutes
B. 60 minutes
C. 9.6 minutes
D. 40 minutes
Answer:A
The standard deviation of the waiting time of the 25 persons waiting in an ATM queue was found to be 4 hours. The standard error of the estimator of the population mean for a simple random sample with replacement of size 25 persons will be:
A. 48 minutes B. 60 minutes C. 9.6 minutes D. 40 minutes