# Hypothesis Test Rocky Mountain Rath Publishing – Solution Guide

The Rocky Mountain district sales manager of Rath Publishing Inc., a college textbook publishing company, claims that the sales representatives make an average of 36 sales calls per week on professors. Several reps say that this estimate is too low. To investigate, a random sample of 40 sales representatives reveals that the mean number of calls made last week was 43. The standard deviation of the sample is 6.4 calls. Using the 0.050 significance level, can we conclude that the mean number of calls per salesperson per week is more than 36?

• H0 : μ ≤ 36
• H1 : μ > 36

### Computing the Test Statistic in Excel

The first step is to compute the test statistic in excel. Look at the formulas presented below as a guide for the solution. This will allow you to compute the test statistic for any set of values.

6.29

### What is your decision regarding H0?

Reject H0. The mean number of calls is greater than 36 per week.

• Student: Not Provided
• Textbook: Statistical, Techniques in Business & Economics
• Course: QNT 351