The Rocky Mountain district sales manager of Rath Publishing Inc., a college tex

Question

The Rocky Mountain district sales manager of Rath Publishing Inc., a college textbook publishing company, claims that the sales representatives make an average of 37 sales calls per week on professors. Several reps say that this estimate is too low. To investigate, a random sample of 43 sales representatives reveals that the mean number of calls made last week was 41. The standard deviation of the sample is 2.6 calls. Using the 0.010 significance level, can we conclude that the mean number of calls per salesperson per week is more than 37? H0 : 37 H1 : > 37 (1) Compute the value of the test statistic. (Negative value should be indicated by a minus sign. Round your answer to 3 decimal places.) Value of the test statistic (2) What is your decision regarding H0? (reject/do not reject) H0. The mean number of calls is (blank) than 37 per week.

Explanation / Answer

Solution :

H0: 37 , H1 : > 37 refuse H0 incase t > 2.418 Calculating sample t = ( 41 - 37 )/( 2.6/43 ) = 10.088 , It rejected H0Conclusion is greater than average number of calls per week 37 through H0

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