Probability and Conditional Probability

SAT Math· difficulty 4/5

A two-way table: Senior class — Likes math: 40 male, 35 female. Dislikes math: 20 male, 25 female. What is the probability that a randomly chosen male dislikes math?

  • A

    20/6020/60

    check_circle
  • B

    60/12060/120

  • C

    20/12020/120

  • D

    20/4520/45

Explanation

Total males = 40+20=6040 + 20 = 60. P(dislikemale)=20/60=1/3P(\text{dislike} | \text{male}) = 20/60 = 1/3.

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