In a Two-Sample Test for Differences in Means, the Hypotheses

Multiple Choice

In a two-sample test for differences in means, the hypotheses are of the form:

A) $\begin{array} { l } H _ { 0 } : \mu 1 - \mu _ { 2 } \{ \geq , \leq , \text { or } = \} 0 \\H _ { 1 } : \mu 1 - \mu 2 \{ \geq , < , \text { or } = \} 0\end{array}$

B) $\left.H_{0}: \mu 1-\mu 2, \geq, \leq \text { or }=\right\} 0$
$H_{1}: \mu_{1}-\mu_{2}\{>,<, \text { or } z\} 0$

C) $\begin{array}{l}H_{0}: \mu_{1}-\mu_{2}\{\geq, \leq \text {, or } z\} 0 \\H_{1}: \mu_{1}-\mu_{2}\{>,\leq, \text { or }=\} 0\end{array}$

D) $\begin{array}{l}H_{0}: \mu_{1}-\mu_{2}\{>,<\text {, or }=\} 0 \\H_{1}: \mu_{1}-\mu_{2}\{\leq, \geq \text { or } z\}\end{array}$