random sample of 31 patients took an arthritic drug for 3months. blood tests sho

Question

random sample of 31 patients took an arthritic drug for 3months. blood tests showed the average pH to be sample mean = 8.1with sample standard deviation s = 1.9. Use a 5% level ofsignificance to test the claim that the drug has changed (eitherway) the mean pH level of the blood. Please help me find thecorrect formulas so I can work the problem random sample of 31 patients took an arthritic drug for 3months. blood tests showed the average pH to be sample mean = 8.1with sample standard deviation s = 1.9. Use a 5% level ofsignificance to test the claim that the drug has changed (eitherway) the mean pH level of the blood. Please help me find thecorrect formulas so I can work the problem

Explanation / Answer

x = random variable pH and the mean of the x distributionis = 7.4

sorry about that and thank you!!!

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