The t-test for the difference between the means of two independent populations assumes that the respective:
A. sample sizes are equal.
B. means are equal.
C. populations are normal.
D. All of these choices are true.
Analysis:
A. Incorrect. It assumes that the respective populations are normal.
B. Incorrect. It assumes that the respective populations are normal.
C. Correct. It assumes that the respective populations are normal.
D. Incorrect. It assumes that the respective populations are normal.
ANSWER : C
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