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Jay-Z hypothesizes that exactly 40% of college students are illegally downloading Dr. Dre's songs. A sample of 200 college students was taken. The data Downloads.xlsx

Jay-Z hypothesizes that exactly 40% of college students

are illegally downloading Dr. Dre's songs. A sample of 200 college students was taken. The

data \Downloads.xlsx" presents the results with 1 indicating that a student is indeed illegally

downloading Dr. Dre's music.

a) For the given data, at the 0.05 level of significance, can we reject Jay-Z's (null) hypothesis?

b) For the given data, determine a 95% confidence interval for the proportion of college

students illegally downloading Dr. Dre's songs. (The Central Limit Theorem (CL

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