A survey is being planned to determine the mean amount of time corporation executives watch television. A pilot survey i
Posted: Sun Jul 10, 2022 10:21 am
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 13 hours, with a standard deviation of 3.0 hours. It is desired to estimate the mean viewing time within one-quarter hour. The 95% level of confidence is to be used. (Use z Distribution Table.) How many executives should be surveyed? (Round your z-score to 2 decimal places and round up your final answer to the next whole number.) Number of executives