SOLUTION: You want to estimate the mean time college students spend watching online videos each day. The estimate must be within 1 minute of the population mean, and you want to be 99% conf
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Question 1141163: You want to estimate the mean time college students spend watching online videos each day. The estimate must be within 1 minute of the population mean, and you want to be 99% confident in your estimate. What sample size would be required if the standard deviation of viewing time is 2.4 minutes? Answer by Boreal(15235) (Show Source):
You can put this solution on YOUR website! error is 1 minute=z*sigma/sqrt(n)=2.576*2.4/sqrt(n)
square both sides and multiply through by n
1n=38.22
39 people.
