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A simple random sample of 1100 males aged 12 to 17 in the United States were asked whether they played massive multiplayer online role-playing games

A simple random sample of 1100 males aged 12 to 17 in the United States were asked whether they played massive multiplayer online role-playing games (MMORPGs); 775 said that they did. Construct and interpret a 90% confidence interval that estimates the proportion of all US males aged 12 to 17 who play MMORPGs.

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