You manage two call centers and are working on trying to reduce
the amount of time customers are placed on hold. You believe the
mean hold times at the two call centers are not the same so you
start by testing the claim that the mean hold time for Call Center
1 is different than the mean hold time for Call Center 2
.
You wish to test the claim that the mean hold time for Call Center 1 is different than the mean hold time for Call Center 2 at a significance level of α=0.001
You obtain the following two samples of data from each center. Each data point is the amount of time (in seconds), a customer is placed on hold.
Call Center 1  Call Center 2  



The statistical software output for this problem is:
From above output:
Test statistic = 0.5260
p  Value = 0.6047
greater than α
Fail to reject the null
There is not sufficient sample evidence to support the claim that the mean hold time for Call Center 1 is different than the mean hold time for Call Center 2.
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