Q: The probability of not committing a __________ error is called Power of Test.  

Answer: B

The correct answer is "Type 2". In hypothesis testing, the probability of not committing a Type 2 error is called the power of the test. A Type 2 error occurs when we fail to reject a null hypothesis that is actually false. The power of a test is the probability of rejecting the null hypothesis when it is false, or equivalently, the probability of correctly accepting the alternative hypothesis when it is true. The power of a test depends on various factors, such as the sample size, the level of significance, and the effect size.

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