Hypothesis Testing: t Tests. Syndicated Publications, Inc., publishes a number of spe- cialty magazines directed at dairy producers located throughout the midwest. As part of the its sales trainee program, the company closely monitors the performance of new advertising space sales personnel. During a recent 2-week period, the number of customer contacts were monitored and recorded for two new sales representatives:
Service Calls per Day
|
Staff Member A
|
Staff Member B
|
|
8
|
6
|
|
7
|
6
|
|
5
|
5
|
|
5
|
6
|
|
6
|
7
|
|
6
|
6
|
|
4
|
6
|
|
7
|
6
|
|
5
|
6
|
|
7
|
6
|
A. Calculate the 95% confidence interval for the population mean number of customer contacts for each sales representative.
B. At this confidence level, is it possible to reject the hypothesis that these two representatives call on an equal number of potential clients?