Compute the power of the test

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Reconsider the data from Medicine and Science in Sports and Exercise described in Exercise 8-30. The sample size was seven and the sample mean and sample standard deviation were 315 W and 16 W, respectively.

(a) Is there evidence that leg strength exceeds 300 W at significance level 0.05? Find the P-value

(b) Compute the power of the test if the true strength is 304 W

(c) What sample size would be required to detect a true mean of 304 W if the power of the test should be at least 0.90?

(d) Explain how the question in part (a) could be answered with a confidence interval.

Reference no: EM132845937

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