A high school with 1000 students offers two foreign language courses : French and Japanese. There ar

Discussion in 'Calculator Requests' started by math_celebrity, Jan 8, 2017.

  1. math_celebrity

    math_celebrity Administrator Staff Member

    A high school with 1000 students offers two foreign language courses : French and Japanese. There are 200 students in the French class roster, and 80 students in the Japanese class roster. We also know that 30 students enroll in both courses. Find the probability that a random selected student takes neither foreign language course.

    Let F be the event a student takes French and J be the event a student takes Japanese
    P(F) = 200/1000 = 0.2
    P(J) = 80/1000 = 0.08
    P(F ∩ J) = 30/1000 = 0.03

    From our two event calculator, we get P(F U J) = 0.25
    So we want P(F U J)^C = 1 - P(F U J) = 1 - 0.25 = 0.75
     

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