The following table represents the highest educational attainment of all adult
residents in a certain town. If a resident who has completed just high school
or only some college is chosen at random, what is the probability that they are
aged 20-29? Round your answer to the nearest thousandth.
Age 20-29 Age 30-39 Age 40-49 Age 50 & over
Total
High school only
823
1367
500
910
3600
1
646
1329
822
1189
3986
Some college
Bachelot's degree
1658
681
892
1428
4659
Master's degree
1172
617
759
971
3519
Total
4299
3994
2973
4498
15764