A small company that specializes in gourmet cookies decides to redesign its packaging. The company owner is
Question:
A small company that specializes in gourmet cookies decides to redesign its packaging. The company owner is certain that the new package will lead to increased sales. Weekly sales at a random sample of stores in the Barrie area are recorded before and after the change in package design. Using the 5% level of significance, analyze the data to see if the owner's idea is correct. Also, construct a 90% confidence interval estimate of the differences in sales after the product redesign. The data set is available in MyStatLab and is reproduced in Exhibit 9.15.
Transcribed Image Text:
Weekly Sales Before and After Product Redesign Store Sales After 842.42 831.54 822.86 876.97 776.44 793.19 730.17 D-564 Byrne Drive576.95 758.87 736.04 51 Bayfield 109 Mapleview Drive 137 Wellington 6 Collier 421 Essa Road 19 Queen 345 Cundles Sales Before 813.67 698.71 734.48 83246 791.22 766.73 668.66 631.05 724.39 766.76 24 Archeir 15 Short St
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First calculate the differences Weekly Sales Before and After Product Redesign Store Sales after Sal...View the full answer
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