Average Telephone Time on Hold Narrative

Essay

Average Telephone Time on Hold Narrative
A customer service representative was interested in comparing the average time (in minutes) customers are placed on hold when calling Gaz Metropolitain and Hydro-Quebec, both in Quebec. The representative obtained two independent random samples and calculated the following summary information: Assume the distributions of time a customer is on hold are approximately normal.
-Refer to Average Telephone Time on Hold Narrative. Calculate the value of the test statistic.