Question: Refer to the data for problem 1. a. Find the average difference and its standard error for every pair of advertisements (computed as ad 2

Refer to the data for problem 1.
a. Find the average difference and its standard error for every pair of advertisements (computed as ad 2 minus ad 1, ad 1 minus ad 3, and ad 2 minus ad 3).
b. Test every pair of advertisements at the 1% level and report the results.

TABLE 15.5.1 Analysis of Ad Effectiveness Ad 1 Average Standard deviation Sample size (consumers) 01 Ad 2 63.2 68.1 7.9 113 Ad 3 53.5 9.2 97 105

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