Question 5.417

7. Farmworkers' Educational Level. The U.S. Department of Agriculture reports on the demographics of hired farmworkers.15 An excerpt of the results is provided in the table, showing the percentage of noncitizen and citizen farmworkers who attained various educational levels. The educational levels are mutually exclusive. Find the following probabilities:

  1. The probability that a noncitizen farmworker is a high school graduate or has some college
  2. The probability that a citizen farmworker is a high school graduate or has some college
  3. The probability that a noncitizen farmworker has less than a ninth-grade education and has some college
  4. The probability that a farmworker is not a citizen
Noncitizens Citizens
Less than 9th grade 238,008 61,776
9th–12th grade (no diploma) 57,904 152,880
High school graduate 59,784 222,144
Some college 20,304 187,200

5.99.7

(a) 0.213 (b) 0.656 (c) 0 (d) 0.376