(2nd opinion) You are conducting a study on the effects of a medication. Patient
ID: 3180319 • Letter: #
Question
(2nd opinion) You are conducting a study on the effects of a medication. Patients are divided into two groups, the experimental group (who took the medication), and controls (who did not take the medication). Before you test the effect of the medication, you want to be sure that both genders are equally represented in each group- that is, the number of men is roughly equal in controls and cases, and the number of women is similarly equal in controls and cases. There is a total of 116 subjects. What test would you use?
Possible Tests:
Independent samples t-test
One sample t-test
Paired samples t-test
ANOVA
Kruskal Wallis Test
Signed Rank Test
Rank Sum Test
Chi-Square Test
Fisher Exact Test
Linear regression
Shapiro-Wilke Test
Explanation / Answer
Solution:
For the given scenario, we are given two groups, the experimental group and control group. Both groups are independent of each other. We want to find the significant difference between the average effects of the medication between two groups. For checking this significant difference, we will use the independent samples t test for the population means if the ratio scale or level of the variable is used. If the variable described by ranks, then we will use signed rank test for finding out the significant difference between the two population means. The use of the proper test is based on the assumptions for the test. We need to check the assumption of normality before using some tests of hypothesis. So, for checking the normality of the test we would use the Shapiro-Wilke test.
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