Biology, 27.07.2019 10:50 snowprincess99447
An epidemiologist, dr. stu d. hertz, will study the association between smoking status and serum cholesterol level. he will measure cholesterol in random sample of smokers and a separate random sample of nonsmokers. he thinks that smoking is associated with higher cholesterol levels. the overall mean cholesterol level in the population is 215 mg/dl. which null hypothesis should dr. hertz test?
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An epidemiologist, dr. stu d. hertz, will study the association between smoking status and serum cho...
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