marketing organization wishes to study the effects of four sales methods (Method 1, 2, 3, & 4) on the weekly sales of a product. The organization employs three salesmen (A, B, & C) to use each sales method. The weekly sales made by each salesman using four different methods are shown in the table below. Sales Method/S A B C 1 32 29 30 2 32 30 28 3 28 25 23 4 25 24 23 a) Run the ANOVA at 0.05 level of significance based on the provided data. Copy the Excel output below. b) Based on the output, test the null hypothesis H0that no differences exist between the effects of the sales methods (treatments) on mean weekly sales. Can we conclude that the different sales methods have different effects on mean weekly sales?
A marketing organization wishes to study the effects of four sales methods (Method 1, 2, 3, & 4) on the weekly sales of a product. The organization employs three salesmen (A, B, & C) to use each sales method. The weekly sales made by each salesman using four different methods are shown in the table below.
|
Sales Method/S |
A |
B |
C |
|
1 |
32 |
29 |
30 |
|
2 |
32 |
30 |
28 |
|
3 |
28 |
25 |
23 |
|
4 |
25 |
24 |
23 |
a) Run the ANOVA at 0.05 level of significance based on the provided data. Copy the Excel output below.
b) Based on the output, test the null hypothesis H0that no differences exist between the effects of the sales methods (treatments) on mean weekly sales. Can we conclude that the different sales methods have different effects on mean weekly sales?
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(C) use tukey simultaneous 95 percent confidence intervals to make pair wide comparisons of the sales method effects on mean weekly sales. Which sales method(s) maximize mean weekly sales? (Round your answers to 3 decimal places. Negative amounts should be indicated by a minus sign.)
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