Please no written by hand solution 1) Suppose you want to know the percentage of university students who consider themselves beer drinkers. You perform a pre-test and find that, in a small sample that is not representative of the target market, 47% of students say they drink beer. If you want 95% confidence that you have the correct answer (within +/- 3%) when you calculate the mean in your survey, what size representative sample must you obtain?
Please no written by hand solution
1) Suppose you want to know the percentage of university students who consider themselves beer drinkers. You perform a pre-test and find that, in a small sample that is not representative of the target market, 47% of students say they drink beer. If you want 95% confidence that you have the correct answer (within +/- 3%) when you calculate the mean in your survey, what size representative sample must you obtain?
2) Now, suppose you want to know the average amount of beer consumed in a typical week by a beer-drinking student, within 3 beers per week. Calculate the required
3) Describe the method you used to estimate the standard error, in detail.
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