In Testing the Null Hypothesis $H _ { 0 } : p _ { 1 } - p _ { 2 } = 0$

Multiple Choice

In testing the null hypothesis $H _ { 0 } : p _ { 1 } - p _ { 2 } = 0$ , if $\mathcal { H } _ { 0 }$ is false, the test could lead to:

A) Type I error.
B) Type II error.
C) Either a Type I or a Type II error.
D) None of these choices are correct.