The Following Contingency Table Provides a Joint Frequency Distribution for a Group

Multiple Choice

The following contingency table provides a joint frequency distribution for a group of retired people by career and age at retirement. Age at Retirement $$\begin{array} { | c | c | c | c | c | c | } \hline \text { Career } & 50 - 55 & 56 - 60 & 61 - 65 & \text { Over 65 } & \text { Total } \\\hline \text { Attorney } & 8 & 41 & 87 & 36 & 172 \\\hline \begin{array} { c } \text { College } \\\text { Professor }\end{array} & 10 & 38 & 71 & 31 & 150 \\\hline \text { Secretary } & 21 & 45 & 63 & 49 & 178 \\\hline \text { Store Clerk } & 18 & 44 & 70 & 50 & 182 \\\hline \text { Total } & 57 & 168 & 291 & 166 & 682 \\\hline\end{array}$$ Suppose one of these people is selected at random.Compute the probability that the person selected was a store clerk.

A) 0.084
B) 0.099
C) 0.316
D) 0.267
E) 0.026