A Researcher Plans to Conduct a Test of Hypotheses at the α=

A researcher plans to conduct a test of hypotheses at the α= 0.05 significance level. She designs her study to have a power of 0.80 at a particular alternative value of the parameter of interest. What is the probability that the researcher will commit a Type I error?

A) 0.05
B) 0.20
C) 0.80
D) Equal to the P-value and cannot be determined until the data have been collected