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Question: only require work for 643...

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Only require work for 6.43!

6.42 ender and commercial preference. A study was designed to compare two energy drink commercials. Each participant was shown the commercials in random order and asked to select the better one. Commercial A was selected by 44 out of 100 women and 79 out of 140 men. Give an estimate of the difference in gender proportions that favored Commercial A. Also construct a large-sample 95% confidence interval for this difference. 6.43 Gender and commercial preference, revisited Refer to TIExercise 6.42. Construct a 95% confidence interval for the difference in gender proportions that favor Commercial Explain how could have obtained these results from the calculations you did in Exercise 6.42.

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