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A researcher in obstetrics believes that pregnancy causes cholesterol levels to rise in women. Suppose the...

A researcher in obstetrics believes that pregnancy causes cholesterol levels to rise in women. Suppose the mean cholesterol level for all American women is 200 with a standard deviation of 42. The researcher samples 36 pregnant women and finds their average cholesterol level is 215.4. Is there enough evidence to support the researchers beliefs using a .01 significance level? (Use the Critical Value Approach!)

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