A researcher conducts a test on the effectiveness of a cholesterol treatment on
ID: 239564 • Letter: A
Question
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:
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.
Cholesterol Decreased
No Cholesterol Decrease
Total
Treatment
38
18
56
No treatment
30
28
58
Total
68
46
114
Explanation / Answer
procedure for testing hypothesis
State the null hypothesis
State the alternative hypothesis
set the alpha value i.e. 0.05 before analysing your data
Data collection
Analyze the data using statistics
State accepatance and rejection areas
From the analysis and the alpha value less than or more than 0.05 suggests the rejection or acceptance of null hypothesis
Null Hypothesis
Treatment has no effect on cholesterol reduction
Alternative Hypothesis
Treatment has effect on cholesterol reduction
Test statistics
Use Z-test
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