Determine the mean amount of time corporation

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Reference no: EM13100700

A survey is being planned to determine the mean amount of time corporation executives watch television. A pilot survey indicated that the mean time per week is 12 hours, with a standard deviation of 3.0 hours. It is desired to estimate the mean viewing time within one-quarter hour. The 95 percent level of confidence is to be used.

How many executives should be surveyed? (Round up your answer to the next whole number.)

Reference no: EM13100700

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