THE BANK CUSTOMER WAITING TIME CASE 
WaitTime
The mean and the standard deviation of the sample of 100 bank customer waiting times are and s = 2.475. Let μ denote the mean of all possible bank customer waiting times using the new system and consider testing H0: μ = 6 versus Ha: μ < 6. Perform a t test of these hypotheses by setting α equal to .05 and using a critical value. Also, interpret the p-value of .0158 for the hypothesis test.
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