One researcher wishes to estimate the mean number of hours that high school students spend watching TV on a weekday

One researcher wishes to estimate the mean number of hours that high

school students spend watching TV on a weekday. A margin of error of
0.26 hour is desired. Past studies suggest that a population standard deviation of 1.7 hours is reasonable. Estimate the minimum sample size required to estimate the population mean with the stated accuracy.

The required sample size is

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