(6 points) A study investigated the effect of shelf placement on supermarket sal

Question

(6 points) A study investigated the effect of shelf placement on supermarket sales of Mellow Moments, a brand of instant coffee. The study ran over a period of fourteen weekdays, and on a given day the coffee brand was shelved in one of three different heights: knee, waist, or eye level. The assignment of shelf position to day was at random. On each day, the sales of Mellow Moments (in $100) were recorded and were as follows: Knee Level 5.375.845.38 6.46 Waist Level 9.07 7.86 7.247.907.91 Eye Level 9.237.397.726.736.87 Box plots displaying the data are shown below:

Explanation / Answer

b)

c)

d) 6.557475 /13 =

e)F-statistic = 10.2194 > F_0.05,2,11

we rejct the null

option A) is correct

Anova: Single Factor SUMMARY Groups Count mean standard deviation knee 4 5.7625 0.514093053 waist 5 7.996 0.663347571 eye 5 7.588 1.000559843

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