The Sampling Distribution Of $\bar { p } _ { 1 } - \bar { p } _ { 2 }$

Multiple Choice

The sampling distribution of $\bar { p } _ { 1 } - \bar { p } _ { 2 }$ is approximated by a _____.

A) normal distribution
B) t distribution with n₁ + n₂ degrees of freedom
C) t distribution with n₁ + n₂ - 1 degrees of freedom
D) t distribution with n₁ + n₂ + 2 degrees of freedom