Two Basic Rules of Probability · Try It 3
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 play sports. Thirty of the seniors going directly to work play sports. Five of the seniors taking a gap year play sports. What is the probability that a senior is taking a gap year?
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OpenStax, Introductory Statistics 2e · §3.3 Two Basic Rules of Probability · Try It 3
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