The following contingency table provides a joint frequency distribution for a group of retired people by age at retirement and career. Age at Retirement 50-55 56-60 61-65 Over 65 Total A3 A1 A2 A4 Attorney 10 40 75 40 165 C1 Career College Professor 30 80 60 175 C2 Secretary 21 45 63 49 178 C3 Store Clerk 18 44 70 50 182 C4 Total 54 159 288 199 700 How many of these people were not attorneys when they retired? 44 535 165 690

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