In the U.S. Department of Health has suggested that a healthy total cholesterol measurement should be 200 mg/dL or less. Records from 50 randomly and independently selected people from the NHANEs study showed the results in the Minitab output given:

Test the hypothesis that the mean cholesterol level is more than 200 using a significance level of 0.05. Assume that conditions are met.

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One-Sample T 200 Test of μ = 200 vs > StDev 40.67 SE Mean 5.75 Mean 1.44 0.079 50 208.26