The P-Value for a One-Sided Left-Tail Test Is Given by

Multiple Choice

The p-value for a one-sided left-tail test is given by

A) Pr(Z - t^act ) = φ(t^act) .
B) Pr(Z < t^act ) = φ(t^act) .
C) Pr(Z < t^act ) < 1.645.
D) cannot be calculated, since probabilities must always be positive.