In a two-tail test for the population proportion, if the null hypothesis is rejected when the alternative hypothesis is true:
A. a Type I error is committed.
B. a Type II error is committed.
C. a correct decision is made.
D. a one-tail test should be used instead of a two-tail test.
Analysis:
A. Incorrect. If the null hypothesis is rejected when the alternative hypothesis is true a correct decision is made.
B. Incorrect. If the null hypothesis is rejected when the alternative hypothesis is true a correct decision is made.
C. Correct. If the null hypothesis is rejected when the alternative hypothesis is true a correct decision is made.
D. Incorrect. If the null hypothesis is rejected when the alternative hypothesis is true a correct decision is made.
ANSWER : C
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