OpenStax, Statistics §3.3 Two Basic Rules of Probability · Try It 4 · Probability · Counting & chance
Two Basic Rules of Probability · Try It 4
A school has 200 seniors of whom 140 will be going to college next year. Forty will be going directly to work. The remainder are taking a gap year. Fifty of the seniors going to college are on their school's sports teams. Thirty of the seniors going directly to work are on their school's sports teams. Five of the seniors taking a gap year are on their school's sports teams. What is the probability that a senior is going to college and plays sports?
OpenStax, Statistics · §3.3 Two Basic Rules of Probability · Try It 4
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