College Statistics Quiz
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HYPOTHESIS TESTING
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A dietitian wants to assess if a particular 4-week meal plan results in a change in cholesterol levels. The dietitian measures the cholesterol level of 30 subjects before the plan starts and again after the plan is completed. Let μd\mu_d represent the true mean of the differences in cholesterol levels, calculated as (levelbefore_{before} - levelafter_{after}). To find evidence of a reduction in cholesterol, what hypotheses should be tested?
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