# Module 4 BHS 220 Week 6

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
Submit a (2-3 pages) paper before the end of the module that:

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

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Having developed the null and alternative hypotheses in the previous module, write a (2-3 pages) paper in which you:

1. Identify a test statistic to help you assess the evidence against the null hypothesis you developed in the previous module.
2. Explain why you have chosen the specific test statistic. Include in your discussion description of the test statistic.
3. Summarize your findings by creating a summary graph in which you display your data.
4. Discuss the total number of measurements (sample size), the possibility for measurement error, and whether it is large enough to paint an accurate picture.

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