The Rocky Mountain district sales manager of JCM, Inc., a college book publishing company, claims that each of his sales representatives makes 40 calls on professors per week. Several reps said that this estimate is too low. To research the claim, a random sampleof 28 reps revealed that the meannumber of calls made last week was 42. The standard deviationof the sample was computed to be 2.1 calls. At the .05 level of significance, can we conclude that more than 40 calls are made on the average in a week? Use 1.703 for the a priori level.
This solution provides step-by-step calculations, formatted in an attached Word document, to show the student how we conclude that there is sufficient evidence to indicate the mean number of calls.