Power of a Test about a Binomial Parameter
Power of a Test about a Binomial Parameter
The left plot shows the power function of the selected test with the value of marked in purple. The power function is a function of the true value of the parameter . Its value at is called the significance of the test. The right image shows the critical region as a subset of the range of the test statistic. The expected value of the test statistic if , is marked in purple.
p
0
p
p
0
p=
p
0
np
0