Which of the following correctly describes the phenomenon of subject mortality in relation to the independent samples t-test?
A) Subject mortality is a reason for the population mean falling in the rejection region of the distribution.
B) Subject mortality reduces the effect size and thus, should be avoided at all costs.
C) Subject mortality can cause sample sizes to be unequal for both groups being compared.
D) Subject mortality is mainly an ethical issue that has little effect on the actual t-test.

Question

Quizplus · Accepted Answer

Subject mortality refers to the loss of participants during a study. This can result in unequal sample sizes for the groups being compared, which can affect the validity of the independent samples t-test. Therefore, option C is the correct answer. Option A is incorrect because subject mortality doesn't affect the population mean directly. Option B is incorrect because although subject mortality can reduce the effect size, it's not always possible to avoid it. Option D is also incorrect as subject mortality can affect the t-test results.

Which of the Following Correctly Describes the Phenomenon of Subject