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4)The music industry must adjust to the growing practice of consumers burning CDs by downloading from Internet instead of buying.How many randomly selected song purchases

4)The music industry must adjust to the growing practice of consumers burning CDs by downloading from Internet instead of buying.How many randomly selected song purchases must be surveyed as a simple random sample, if 35% of songs in that sample were obtained by downloading from Internet.Assume that we want to be 90% confident that the sample percentage is within two percentage points of the true population percentage.

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