Which of the following is an appropriate null hypothesis?
A. The proportion of a population is equal to 60.
B. The proportion of a sample is equal to 60.
C. The proportion of a population is not equal to 60.
D. All of these choices are true.
Analysis:
A. Correct. The proportion of a population is equal to 60 is an appropriate null hypothesis.
B. Incorrect. The proportion of a population is equal to 60 is an appropriate null hypothesis.
C. Incorrect. The proportion of a population is equal to 60 is an appropriate null hypothesis.
D. Incorrect. The proportion of a population is equal to 60 is an appropriate null hypothesis.
ANSWER : A
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