Question

define level of significance and power of test​

Answer 1

Answer:

Power is the probability that a test of significance will pick up on an effect that is present. Power is the probability that a test of significance will detect a deviation from the null hypothesis, should such a deviation exist. Power is the probability of avoiding a Type II error.

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Answer 2

Answer:

The significance level, also denoted as alpha or α, is the probability of rejecting the null hypothesis when it is true. For example, a significance level of 0.05 indicates a 5% risk of concluding that a difference exists when there is no actual difference.

Power is the probability that a test of significance will pick up on an effect that is present.

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