Given the contingency table shown here, find P(R?L). Survey question: Do you plan on retiring or keep working when you turn 65? $$\begin{array} { | l | c | c | c | }
\hline\text { Employee } & \text { Retire } ( R ) & \text { Work } ( W ) & \text { Total }\
\hline \text { Management } ( M ) & 13 & 18 &31 \
\hline \text { Line worker } ( L ) & 39 & 54 & 93 \
\hline \text { Total } & 52 & 72 & 124\
\hline
\end{array}$$
A).250
B).315
C).425
D).850

Question

Given the contingency table shown here, find P(R?L). Survey question: Do you plan on retiring or keep working when you turn 65? $$\begin{array} { | l | c | c | c | } 
\hline\text { Employee } & \text { Retire } ( R ) & \text { Work } ( W ) & \text { Total }\
\hline  \text { Management } ( M ) & 13 & 18 &31 \
\hline  \text { Line worker } ( L ) & 39 & 54 & 93 \
\hline  \text { Total } & 52 & 72 & 124\
\hline
\end{array}$$
A).250
B).315
C).425
D).850

Quizplus · Accepted Answer

P(R∩L) is the probability that an employee is both a Line worker and plans to Retire. From the table, we can see that the number of Line workers who plan to Retire is 39. So, P(R∩L) = 39/124. Solving, we get: 
P(R∩L) = 0.3145 ≈ 0.315
Therefore, the best choice is B.

Given the Contingency Table Shown Here, Find P(R?L) A)250 B)

Given the Contingency Table Shown Here, Find P(R?L) A)250
B)