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QUESTION
A survey is being planned to determine the mean amount of time corporation executives watch television.
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...