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Type I and Type II Errors — α, Power, and Sample Size

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StatisticsCommon Core VAR-6.FINFVerified correct ✓

Worked examples

A hypothesis test has power = 0.95. What is the probability of a Type II error (failing to reject the null hypothesis when it is false)?
Answer: 0.05
A hypothesis test has power = 0.70. What is the probability of a Type II error (failing to reject the null hypothesis when it is false)?
Answer: 0.3

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Hypothesis Test for a Mean — One-Sample t-Test

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