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# Minimum Sample Size Analysis

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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 0.25 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.

a) The minimum sample size required to estimate the population mean with the stated accuracy is _____. (Round to the nearest integer as needed).

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#### Solution Preview

In this question, the level of confidence is not given. I will provide with you three different answers.

1) The level of confidence is 95%
E=0.25, sigma=1.7. If we choose a 95% confidence level, then z=1.96. ...

#### Solution Summary

The solution determines a minimum sample size analysis.

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