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

The following contingency table provides a joint frequency distribution for a group of retired people by career and age at retirement. Age at Retirement $$\begin{array} { | c | c | c | c | c | c | } \hline \text { Career } & 50 - 55 & 56 - 60 & 61 - 65 & \text { Over 65 } & \text { Total } \\\hline \text { Attorney } & 11 & 46 & 97 & 39 & 193 \\\hline \begin{array} { c } \text { College } \\\text { Professor }\end{array} & 9 & 37 & 90 & 48 & 184 \\\hline \text { Secretary } & 21 & 45 & 63 & 49 & 178 \\\hline \text { Store Clerk } & 18 & 44 & 70 & 50 & 182 \\\hline \text { Total } & 59 & 172 & 320 & 186 & 737 \\\hline\end{array}$$ Find the probability that the person was a secretary or retired before the age of 61.

A) 0.465
B) 0.286
C) 0.090
D) 0.555
E) 0.414

Correct Answer:

Verified

Unlock this answer now
Get Access to more Verified Answers free of charge

Access For Free