Testing Hypotheses

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A researcher conducts a test on the effectiveness of a cholesterol treatment on 114 total subjects. Assuming the tails of distributions are normal distribution, is there evidence that the treatment is effective?

	Cholesterol Decreased	No Cholesterol Decrease	Total
Treatment	38	18	56
No treatment	30	28	58
Total	68	46	114

Case Assignment

Briefly describe the procedure for testing hypotheses.
Formulate the null and alternative hypotheses.
Determine the test statistic that you will use.
Calculate the p-value. Show your work.
Discuss whether there is enough evidence to reject the null hypothesis.

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