An insurance company selected samples of clients under 18 years of age and over 18 and recorded the number of accidents they had in the previous year.The results are shown below. $\begin{array}{ll}
\text { Under Age of } 18 & \text { Over Age of } 18 \
n_{1}=500 & n_{2}=600 \
\text { Number of accidents }=180 & \text { Number of accidents }=150
\end{array}$ We are interested in determining if the accident proportions differ between the two age groups.
The pooled estimator of the population proportion is
A) .305.
B) .300.
C) .027.
D) .450.

Question

An insurance company selected samples of clients under 18 years of age and over 18 and recorded the number of accidents they had in the previous year.The results are shown below. $\begin{array}{ll}
\text { Under Age of } 18 & \text { Over Age of } 18 \
n_{1}=500 & n_{2}=600 \
\text { Number of accidents }=180 & \text { Number of accidents }=150
\end{array}$  We are interested in determining if the accident proportions differ between the two age groups.
The pooled estimator of the population proportion is
A) .305.
B) .300.
C) .027.
D) .450.

Quizplus · Accepted Answer

The pooled estimator of the population proportion is calculated by dividing the total number of accidents by the total number of clients: (180 + 150) / (500 + 600) = 330 / 1100 = 0.300.

An Insurance Company Selected Samples of Clients Under 18 Years