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9 January, 18:56

3% percent of the students at Lincoln High School are in orchestra, 5%

are in band and 1% are in both. If a student is selected at random, what is

the probability that the student is in orchestra OR band?

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Answers (1)
  1. 9 January, 20:14
    0
    The probability of a student to be in the orchestra or the band is 0.07 or 7%.

    Step-by-step explanation:

    The probability of a student to be in the orchestra or the band is given by the following formula:

    p (orchestra or band) = p (orchestra) + p (band) - p (orchestra and band)

    p (orchestra or band) = 0.03 + 0.05 - 0.01

    p (orchestra or band) = 0.08 - 0.01

    p (orchestra or band) = 0.07

    The probability of a student to be in the orchestra or the band is 0.07 or 7%.
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