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A hypothesis test has probability of TYPEⅠERROR of 5 percent, so there is 9
5% probability that the test statistic will be between the critical value if t
his is a two-tail test.
Answer:It’s not necessarily true sine the null may be false and the probabili
ty of rejection unknown.看不懂……

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关键词：统计学 Probability HYPOTHESIS rejection statistic 求助 统计学

type 1 error refers to the situation that the null is rejected but the null is true(should not be rejected)(is it type 1 or type 2 error in the question, because it seems to me that 2 is more appropriate). 5% refers to the probability of type 1 error occurs, and has nothing to do with the test confidence interval.