Sample Size for TV Survey. Nielsen Media Research wishes to estimate the mean number of hours that high school students spend watching TV on a weekday. A margin of error of E = 0.25 hour is desired. Past studies suggest that a population standard deviation of ?? = 1.7 hours is reasonable. Calculate the minimum sample size required to estimate the population mean with 95% confidence.
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Nielsen Media Research wants to estimate the mean amount of time (in minutes) that fulltime college students spend watching television each weekday. Find the sample size necessary to estimate that mean with 15-min margin of error. Assume that a 96% confidence level is desired. Also assume that a pilot study showed that the standard deviation is estimated to be 112.2 minutes. show work
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