The Rocky Mountain district sales manager of Rath Publishing Inc., a college textbook publishing company, claims that the sales representatives make an average of 43 sales calls per week on professors. Several reps say that this estimate is too low. To investigate, a random sample of 29 sales representatives reveals that the mean number of calls made last week was 44. The standard deviation of the sample is 4.1 calls. Using the 0.050 significance level, can we conclude that the mean number of calls per salesperson per week is more than 43? H0: μ ≤ 43H1: μ > 43a) Compute the value of the test statistic. (Round your answer to 3 decimal places.) Value of the test statistic___________

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Asked Nov 18, 2019
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The Rocky Mountain district sales manager of Rath Publishing Inc., a college textbook publishing company, claims that the sales representatives make an average of 43 sales calls per week on professors. Several reps say that this estimate is too low. To investigate, a random sample of 29 sales representatives reveals that the mean number of calls made last week was 44. The standard deviation of the sample is 4.1 calls. Using the 0.050 significance level, can we conclude that the mean number of calls per salesperson per week is more than 43?

 

H0: μ ≤ 43

H1: μ > 43

a) Compute the value of the test statistic. (Round your answer to 3 decimal places.) Value of the test statistic___________

 

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Expert Answer

Step 1

Introduction:

When the population standard deviation is unknown and the sample standard deviation must be used in a test to determine whether the true population mean is equal to a given constant, then the t-test must be used.

The test statistic is of the form:

t = (μ0...

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