The Level of Significance $\alpha$ ) Is _____

The level of significance ( $\alpha$ ) is _____.

A) always equal to 0.05
B) always equal to 0.01
C) the probability of making an error by rejecting the null hypothesis when it is actually true
D) the probability of making an error by accepting the null hypothesis when it is actually false
E) the ability to reject the null hypothesis when in fact the null hypothesis is false