POPULATION MEANS AND PROPORTIONS

Module 4 – Case

DRAWING INFERENCES ABOUT POPULATION MEANS AND PROPORTIONS

Case Assignment

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

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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.

Assignment Expectations

Assessment and Grading: Your paper will be assessed based on the performance assessment rubric that is linked within the course. Review it before you begin working on the assignment.

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