The significance level, $\alpha$ ,is the probability that the test statistic would assume a value as or more extreme than the observed value of the test statistic.

Question

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The significance level, $\alpha$, is the probability of rejecting the null hypothesis when it is actually true (Type I error), not the probability of the test statistic assuming a value as or more extreme than observed.

The Significance Level α\alphaα ,Is the Probability That the Test Statistic Would Assume a Statistic

The Significance Level $\alpha$ ,Is the Probability That the Test Statistic Would Assume a Statistic