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 55 sales calls per week on professors. Several reps say that this estimate is too low. To investigate, a random sample of 60 sales representatives reveals that the mean number of calls made last week was 57. The standard deviation of the sample is 2.7 calls. Using the 0.100 significance level, can we conclude that the mean number of calls per salesperson per week is more than 55?

H₀ : μ ≤ 55

H₁ : μ > 55

(Round the final answers to 3 decimal places.)

The value of the test statistic is  .

(Click to select)  Accept  Reject  H₀ if t >  . At the 0.100 significance level, the mean number of calls is  (Click to select)  greater  less  than 55 per week.

Answer 1