Question

Tastee Bakery Company wishes to study the effect of shell height employed by the supermarket on monthly sales (measured in cases of 10 units each) for a product Shelf display height, the factor to be studied, has three levels, Bottom, Middle and Top. To compare the three treatments, the bakery uses completely randomized experimental design. For each shell height, six supermarkets (the experimental units) of equal sales potential are randomly selected and each supermarket displays the product using its assigned shelf height for a month. At the end of the month, sales of the bakery product (response variable) at the 18 participating stores are recorded Bottom Middle 334.8

Answer 1

from the anova analysis of given data in excel the obtianed output is given below

Anova: Single Factor
SUMMARY
Groups	Count	Sum	Average	Variance
Column 1	6	334.8	55.8	6.136
Column 2	6	463.3	77.21666667	9.665666667
Column 3	6	309	51.5	2.716
ANOVA
Source of Variation	SS	df	MS	F	P-value	F crit
Between Groups	2277.021111	2	1138.510556	184.4471946	2.7485E-11	3.68232
Within Groups	92.58833333	15	6.172555556
Total	2369.609444	17

from output we have the mean square error (MSE) = 6.1725

so correct choice is last option