Answered: William's Department Store is trying to…

ENGR.ECONOMIC ANALYSIS

14th Edition

ISBN:9780190931919

Author:NEWNAN

Publisher:NEWNAN

Chapter1: Making Economics Decisions

Section: Chapter Questions

Problem 1QTC

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Question

William's Department Store is trying to determine whether there is a difference in mobile electronics sales for four different in-store locations. The company randomly chooses 20 same-sized stores that have similar storewide net sales. They randomly assign five stores to use the current mobile electronics aisle (In-aisle), five stores to use the special front location (front), five stores to use the kiosk location (kiosk), and five stores to use the expert counter (expert). The results are below. At the .05 level of significance, can William's Department Store conclude there is a difference among the mean sales among the four in-store locations? State H0 and H1 Should you reject or not reject H0

Anova: Single Factor
SUMMARY
Groups
In-Aisle
Count
Sum
149.62
Average
29.924
Variance
1.70388
Front
5
152.97
154.06
151.67
30.594
0.45643
Kiosk
30.812
0.07082
Expert
30.334
0.01568
ANOVA
Source of Variation
SS
df
MS
P-value
F crit
Between Groups
Within Groups
2.18644
0.728813
16 0.561703
3
1.2975 0.3095
3.24
8.98724
Total
11.17368
19

In-Aisle
Front
Kiosk
Expert
30.06
30.22
30.78
30.33
29.96
31.47
30.41
30.29
30.9
31.13
30.79
30.25
30.96
29.86
30.95
30.25
27.74
30.29
31.13
30.55

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