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 20 hours, with a standard deviation of 6.0 hours. It is desired to estimate the mean viewing time within one-quarter hour. The 99 percent level of confidence is to be used.How many executives should be surveyed? (Round up your answer to the next whole number.)A survey is being planned to determine the mean amount of time corporation executives watch television. Apilot survey indicated that the mean time per week is 20 hours, with a standard deviation…
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