For a given sample size n , if the level of significance a is decreased, the power of the test will:
A)increase.
B)decrease.
C)remain the same.
D)Not enough information to tell.

Question

Quizplus · Accepted Answer

Decreasing the level of significance (alpha) makes the criteria for rejecting the null hypothesis more stringent, which can lead to a higher chance of not rejecting a false null hypothesis (Type II error). This effectively reduces the power of the test, which is the probability of correctly rejecting a false null hypothesis.

For a Given Sample Size N , If the Level