Question: Consider again plants with the null hypothesis that mean height is 39.0. Assume that the standard deviation is known to be 3.2 cm. 1. Show

Consider again plants with the null hypothesis that mean height is 39.0. Assume that the standard deviation is known to be 3.2 cm.
1. Show that a measured sample mean of 40.0 is highly significant if the sample size is n = 88.
2. Why is the power with this sample size only 90% (as found in the text), rather than more than 99%?

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