A study was conducted to see if an advertisement campaign would affect market share for a...

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A study was conducted to see if an advertisement campaign would affect market share for a name brand of instant decaffeinated coffee. Subjects who use instant decaffeinated coffee were asked which brand they bought last. They were asked this before the campaign and after it. The results are shown in the accompanying table, with computer output based on it below. Complete parts a through c below. Click the icon to view the results and the corresponding computer output. Estimate the population proportion choosing the name brand for the first purchase. (Round to four decimal places as needed.) Two Purchases of Coffee Second Purchase First Purchase Name Brand Name Brand Other Brand 147 85 Other Brand 40 261 McNemar's Test Estimated Difference -0.0844 99% CI (-0.1376, -0.0312) Difference=p(First Purchase) -p(Second Purchase) P 0.000 A study was conducted to see if an advertisement campaign would affect market share for a name brand of instant decaffeinated coffee. Subjects who use instant decaffeinated coffee were asked which brand they bought last. They were asked this before the campaign and after it. The results are shown in the accompanying table, with computer output based on it below. Complete parts a through c below. Click the icon to view the results and the corresponding computer output. Estimate the population proportion choosing the name brand for the first purchase. (Round to four decimal places as needed.) Two Purchases of Coffee Second Purchase First Purchase Name Brand Name Brand Other Brand 147 85 Other Brand 40 261 McNemar's Test Estimated Difference -0.0844 99% CI (-0.1376, -0.0312) Difference=p(First Purchase) -p(Second Purchase) P 0.000