The following information was obtained from independent random samples taken of two populations. Assume normally distributed populations with equal variances. $$\begin{array} { l l l }
& \text { Sample 1 } & \text { Sample 2 } \
\text { Sample Mean } & 45 & 42 \
\text { Sample Variance } & 85 & 90 \
\text { Sample Size } & 10 & 12
\end{array}$$
The standard error of $\bar { x } _ { 1 }$ - $\bar { x } _ { 2 }$ is
A) 3.0.
B) 4.
C) 8.372.
D) 19.48.

Question

The following information was obtained from independent random samples taken of two populations. Assume normally distributed populations with equal variances. $$\begin{array} { l l l } 
& \text { Sample 1 } & \text { Sample 2 } \
\text { Sample Mean } & 45 & 42 \
\text { Sample Variance } & 85 & 90 \
\text { Sample Size } & 10 & 12
\end{array}$$  
The standard error of $\bar { x } _ { 1 }$ - $\bar { x } _ { 2 }$ is
A) 3.0.
B) 4.
C) 8.372.
D) 19.48.

Quizplus · Accepted Answer

The Answer of The following information was obtained from independent random samples taken of two populations. Assume normally distributed populations with equal variances. $$\begin{array} { l l l } 
& \text { Sample 1 } & \text { Sample 2 } \
\text { Sample Mean } & 45 & 42 \
\text { Sample Variance } & 85 & 90 \
\text { Sample Size } & 10 & 12
\end{array}$$  
The standard error of $\bar { x } _ { 1 }$ - $\bar { x } _ { 2 }$ is
A) 3.0.
B) 4.
C) 8.372.
D) 19.48.

The Following Information Was Obtained from Independent Random Samples Taken