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Lv 5
? asked in Science & MathematicsMathematics · 6 years ago

Need help with a math problem?

The duration of trailers show at the beginning of the movies at a certain theatre are uniformly distributed between 20 and 80 seconds.

1. Find the probability that a randomly chosen trailer is more than 45 seconds long

2. If the trailer is already 45 seconds long, what is the probability that it is more than 60 seconds long?

1 Answer

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  • Julius N
    Lv 7
    6 years ago

    1. (80-45)/(80-20)= 0.58333333

    2. (80-60)/(80-45)= 0.57142857

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