1. A consumer preference study compares the effects of three (A,B, and C) on sales of a popular fabric softener. A complete employed. Specifically, 15 supermarkets of equal sales potenti these supermarkets are randomly assigned to each bottle desig sold in 24 hours at each supermarket is recorded. ( BottleDes.x a) You want to test whether WA, He, and uc are equal or different. going to use? One-way ANOVA b) Test the null hypothesis at the .05 level of significance. Anova: Single Factor SUMMARY Groups Count Sum Average Variance A B on on un 83 16.6 5.3 164 32.8 9.2 O 124 24.8 8.2 ANOVA Source of Variation SS df MS F P-value F crit 656.133 328.066 43.3568 3.88529 Between Groups 3 2 7 3 3.23E-06 4 7.56666 Within Groups 90.8 12 7 746.933 Total 3 14