Paying for music downloads. A survey of Canadian teens
Chapter , Problem 5.52(choose chapter or problem)
Paying for music downloads. A survey of Canadian teens aged 12 to 17 years reported that roughly 75% of them used a fee-based website to download music.17 You decide to interview a random sample of 15 U.S. teenagers. For now, assume that they behave similarly to the Canadian teenagers. (a) What is the distribution of the number X who used a fee-based website to download music? Explain your answer. (b) What is the probability that at least 12 of the 15 teenagers in your sample used a fee-based website to download music.
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