A market research study hopes to determine the effectiveness of a celebrity endorser of their wine product. The effectiveness will be based on the average volume sales per day. They believe it will increase in a test market of 11days before and after endorsement

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A market research study hopes to determine the effectiveness of a celebrity endorser of their wine product. The effectiveness will be based on the average volume sales per day. They believe it will increase in a test market of 11days before and after endorsement.
Before
(no. of units
sold/day)
3226288228
33
51
51
49
39
54
46
51
64
72
After
(no. of units
sold/day)
42 40 50 45 1 32 49 49 29 60
51
What can be concluded at 5%
significance level?
Transcribed Image Text:Before (no. of units sold/day) 3226288228 33 51 51 49 39 54 46 51 64 72 After (no. of units sold/day) 42 40 50 45 1 32 49 49 29 60 51 What can be concluded at 5% significance level?
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