SOLUTION: A research group wishes to estimate the mean number of hours that high school students spend watching TV on a weekday. A margin of error of 0.35 hours is desired. Past studies sugg

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Question 1157140: A research group wishes to estimate the mean number of hours that high school students spend watching TV on a weekday. A margin of error of 0.35 hours is desired. Past studies suggest that a population standard deviation of 2.4 hours is reasonable. Estimate the minimum sample size required to estimate the population mean with 95% confidence.
Answer by VFBundy(438) About Me  (Show Source):
You can put this solution on YOUR website!
1.96%282.4%2Fsqrt%28n%29%29 = 0.35

4.704%2Fsqrt%28n%29 = 0.35

0.35%2Asqrt%28n%29 = 4.704

sqrt%28n%29 = 13.44

n = 180.63

You will need a minimum sample size of 181 high school students.