In Using the Z-Test for Comparing Two Proportions, the Null $\pi$

Multiple Choice

In using the Z-test for comparing two proportions, the null hypothesis is typically stated as ____.

A) $\pi$ ₁ = $\pi$ _2.
B) $\pi$ ₁ $\neq$ $\pi$ _2.
C) $\pi$ ₁ x $\pi$ ₂ = 1
D) $\pi$ ₁ - $\pi$ ₂ = 1