A marketing organization wishes to study the effects of four sales methods on we

Question

A marketing organization wishes to study the effects of four sales methods on weekly sales of a product. The organization employs a randomized block design in which three salesman use each sales method. The results obtained are given in the following table, along with the Excel output of a randomized block ANOVA of these data.

Test the null hypothesis H0 that no differences exist between the effects of the sales methods (treatments) on mean weekly sales. Set = .05. Can we conclude that the different sales methods have different effects on mean weekly sales?

H0: there is

Test the null hypothesis H0 that no differences exist between the effects of the salesmen (blocks) on mean weekly sales. Set = .05. Can we conclude that the different salesmen have different effects on mean weekly sales?

H0: salesman

Use Tukey simultaneous 95 percent confidence intervals to make pairwise comparisons of the sales method effects on mean weekly sales. Which sales method(s) maximize mean weekly sales? (Round your answers to 2 decimal places. Negative amounts should be indicated by a minus sign.)

Click here for the Excel Data File

Explanation / Answer

As the p-value is 0.0005 < 0.05, so at 5% significance level, we will reject the null hypothesis of equality of means of sales methods to conclude that there is a significant effect of sales methods in sales.

B) here also as p-value is 0.0000 which is much less than 0.05 so at 5% significance level we will reject the null hypothesis of equality of means of salesman to conclude that there is a significant effect of salesman in sales.

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