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0 pts A large Midwestern university is interested in estimating the mean time that students spend...

0 pts A large Midwestern university is interested in estimating the mean time that students spend at the student recreation center per week. A previous study indicated that the standard deviation in time is about 25 minutes per week. If the officials wish to estimate the mean time within ± 4 minutes with a 90 percent confidence, what should the sample size be?

106

Can't be determined without the sample mean.

105

105.685

math   Statistics-And-Probability   
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