The region of acceptance and the region of rejection are determined by the _____.
A) resistance level of the statistic
B) statistical significance level
C) substantive significance level
D) reasonable doubt
E) practical significance level

Question

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The region of acceptance and rejection is determined by the statistical significance level, also known as alpha-level, which represents the probability of rejecting the null hypothesis when it is actually true. The choice of alpha-level is usually based on the level of risk that the researcher is willing to take to commit a Type I error, which is rejecting the null hypothesis when it is true. The most commonly used alpha-levels are 0.05 and 0.01, which correspond to a 5% and 1% chance of committing a Type I error, respectively.

The Region of Acceptance and the Region of Rejection Are