Question: A researcher was trying to determine the sample size needed to detect a 4.9 inch difference in height between middle school and kindergarten children, when

A researcher was trying to determine the sample size needed to detect a 4.9 inch difference in height between middle school and kindergarten children, when alpha = .01 (two-tailed) and beta = .10, with a standard deviation of 7.What is the total sample size?

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