The following table represents the highest educational attainment of all adult
residents in a certain town. If a resident who has a master's degree is chosen at
random, what is the probability that they are aged 50 of over? Round your answer to
the nearest thousandth.
High school only
Some college
Bachelor's degree
Master's degree
Total
Age 20-29 Age 30-39 Age 40-49 Age 50 & over Total
3388
741
582
602
305
2230
1133
1104
570
288
3095
304
602
376
230
1512
1210
869
1127
437
3643
3157
2675
1260
10480