Exhibit 10-4
the Following Information Was Obtained from Independent Random

Multiple Choice

Exhibit 10-4
The following information was obtained from independent random samples. Assume normally distributed populations with equal variances.
$$\begin{array} { l c c } & \text { Sample } 1 & \text { Sample 2 } \\\text { Sample Mean } & 45 & 42 \\\text { Sanple Variance } & 85 & 90 \\\text { Sample Size } & 10 & 12\end{array}$$
-Refer to Exhibit 10-4. The standard error of is

A) 3.0
B) 4.0
C) 8.372
D) 19.48