Pate\'s Pharmacy, Inc. operates a regional chain of 120 pharmacies. Each pharmac
ID: 3156718 • Letter: P
Question
Pate's Pharmacy, Inc. operates a regional chain of 120 pharmacies. Each pharmacy's floor plan includes a greeting card department which is relatively isolated. Sandra Royo, Marketing Manager, feels that the level of lighting in the greeting card department may affect sales in that department. She chooses three levels of lighting (soft, medium, and bright) and randomly assigns six pharmacies to each lighting level. Analysis of Sandra's data yielded the following ANOVA table. Source of Variation SS df MS F Treatment 3608.333 2 1804.167 Error 13591.67 15 906.1111 Total 17200 17
Using = 0.05, the appropriate decision is _____________. a) do not reject the null hypothesis 1 2 3 b) do not reject the null hypothesis 1 = 2 = 3 c) reject the null hypothesis 1 2 3d) reject the null hypothesis 1 2 3 e) inclusive
Explanation / Answer
Compute F test statistic=MSR/MSE=1804.167/906.1111=1.99
At df(2,15) the p value is 0.171.
The p value is not less than alpha=0.05.
Fail to reject null hypothesis. b) ans