The Probability of Concluding That an Assignable Variation Exists When

Multiple Choice

The probability of concluding that an assignable variation exists when only random variation is present is:
I.the probability of a Type I error.
II.known as the alpha risk.
III.highly unlikely.
IV.the sum of probabilities in the two tails of the distribution.

A) I and II only
B) I and IV only
C) II and III only
D) I, II, and IV
E) I, III, and IV