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(1-Beta)

Power of correctly rejecting null

Increase Power by

Larger n


Larger alpha

Critical Value Approach

alpha=.05


z score=95%=-1.645

In 2 tail alpha =_____ on each side

a/2

p=<alpha

reject the null

p>alpha

fail to reject the null

.95

1.64

.975

1.96

Type I Error

Accept Alt when Null is true

Type II Error

Accept Null when alt is true