A survey is being planned to determine the mean amount of

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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 18 hours, with a standard deviation of 4.5 hours. It is desired to estimate the mean viewing time within two-quarter hour. The 98 percent level of confidence is to be used.

How many executives should be surveyed?

Reference no: EM13630356

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