28. A sample of eight patients admitted to a hospital with a diagnosis of biliary cirrhosis had...

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28. A sample of eight patients admitted to a hospital with a diagnosis of biliary cirrhosis had a mean IgM level of 160.55 units per milliliter. The sample standard deviation was 50.

Do these data provide sufficient evidence to indicate that the population mean is greater than 150? Let a = .05. Determine the p value.

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