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 |
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.
