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

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 58 sales calls per week on professors. Several reps say that this estimate is too low. To investigate, a random sample of 35 sales representatives reveals that the mean number of calls made last week was 60. The standard deviation of the sample is 4.1 calls. Using the 0.100 significance level, can we conclude that the mean number of calls per salesperson per week is more than 58? H_0: mu lessthanorequalto 58 H_1: mu > 58

Explanation / Answer

here std error =std deviaiton/(n)1/2 =0.693

hence test stat =(X-mean)/std error =(60-58)/0.693 =2.886

as for above p value is significant; hence reject Ho

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