Probability and Conditional Probability

SAT Math· difficulty 3/5

A survey of 200 people: 80 men (30 prefer coffee, 50 prefer tea), 120 women (70 prefer coffee, 50 prefer tea). What is the probability a randomly chosen person is a woman who prefers coffee?

  • A

    70/20070/200

    check_circle
  • B

    120/200120/200

  • C

    70/12070/120

  • D

    70/10070/100

Explanation

Joint probability = (women who prefer coffee) / total = 70/200=0.3570/200 = 0.35.

Want 10 more like this — adaptive to your weak spots?

Related questions