The two samples whose statistics are given in the table are thought to come from populations with equal variances. What is the pooled estimate of the population standard deviation?

$\begin{array}{|c|c|c|}
\hline \boldsymbol{n} & \text {Mean} & \text {SD} \
\hline 25 & 32 &5 \
\hline 20 & 30 & 6 \
\hline
\end{array}$

A) 5.46
B) 1.64
C) 5.59
D) 3.32
E) 5.50

Question

The two samples whose statistics are given in the table are thought to come from populations with equal variances. What is the pooled estimate of the population standard deviation?

$\begin{array}{|c|c|c|}
\hline \boldsymbol{n}  & \text {Mean} & \text {SD} \
\hline 25 & 32 &5 \
\hline 20 & 30 & 6 \
\hline
\end{array}$

A) 5.46
B) 1.64
C) 5.59
D) 3.32
E) 5.50

Quizplus · Accepted Answer

The Answer of The two samples whose statistics are given in the table are thought to come from populations with equal variances. What is the pooled estimate of the population standard deviation?

$\begin{array}{|c|c|c|}
\hline \boldsymbol{n}  & \text {Mean} & \text {SD} \
\hline 25 & 32 &5 \
\hline 20 & 30 & 6 \
\hline
\end{array}$

A) 5.46
B) 1.64
C) 5.59
D) 3.32
E) 5.50

The Two Samples Whose Statistics Are Given in the Table nMeanSD2532520306\begin{array}{|c|c|c|}\hline \boldsymbol{n} & \text {Mean} & \text {SD} \\\hline 25 & 32 &5 \\\hline 20 & 30 & 6 \\\hline\end{array}n2520​Mean3230​SD56​​

The Two Samples Whose Statistics Are Given in the Table $\begin{array}{|c|c|c|}\hline \boldsymbol{n} & \text {Mean} & \text {SD} \\\hline 25 & 32 &5 \\\hline 20 & 30 & 6 \\\hline\end{array}$