A researcher plans to develop a test of hypotheses at the ? = 0.10 significance level. She designs her study to have a power of 0.70 at a particular alternative value of the parameter of interest.
The probability that the researcher will commit a Type II error for the particular alternative value of the parameter at which she computed the power is
A. 0.10.
B. 0.30.
C. 0.70.
D. equal to the 1 - (P-value) and cannot be determined until the data have been collected.