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Question:
Which of the following statements about hypothesis testing is most accurate?
A
Rejecting a true null hypothesis is a Type I error.
explanation
1212Type I error is rejecting the null hypothesis when it is true. The power of a test is the probability of rejecting the null hypothesis when it is false. 
: X # 0 indicates a two-tailed test, while : X < 0 or HA: X > 0 indicates a one-tailed test.
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