10.) In a clinical trial of a new blood medication, a random sample of 40 male subjects is chosen, and the red blood cell count is found to have mean of 5.285 million cells per microliter with a...

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Extracted text: 10.) In a clinical trial of a new blood medication, a random sample of 40 male subjects is chosen, and the red blood cell count is found to have mean of 5.285 million cells per microliter with a standard deviation of 0.787 million cells per microliter. Use a 0.10 significance level to test the claim that sample is from a population with a mean less than 5.4, which is often used as the upper limit of the range of normal values.