Question

The following table represents the highest educational attainment of all adult residents in a certain town. If a resident who is 30-49 years old is chosen at random, what is the probability that they have only completed some college? Round your answer to the nearest thousandth.
Age 20-29 Age 30-39 Age 40-49 Age 50 & over Total
High school only 1580 432 492 1603 4107
Some college 1895 1417 809 1427 5548
Bachelor's degree 1440 1023 480 632 3575
Master's degree 420 453 444 1322 2639
Total 5335 3325 2225 4984 15869

Answer 1

P(some college | age 30–49) = (1417 + 809) / (3325 + 2225) = 2226 / 5550 ≈ 0.401

Rounded to the nearest thousandth: 0.401.