A die was rolled 100 times and the number of times, 6 came up was noted. If the probability calculated from this information is 2/5, then ho

Question

A die was rolled 100 times and the number of times, 6 came up was noted. If the probability calculated from this information is 2/5, then how many times 6 came up? Justify your answer.

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3 weeks 2021-12-27T10:57:37+00:00 2 Answers 0 views 0

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    0
    2021-12-27T10:58:39+00:00

    just find 2/5 of 100. Divide 100 by 5 which is 20 then multiply that by the numerator (which is 2) 20 x 2 = 40 times was how many times the number 6 came up

    0
    2021-12-27T10:59:11+00:00

    Answer: 40 times

    Step-by-step explanation:

    Let the number of times 6 came up be x.

    The formula for calculating probability that an event occur

    = number of times the event occur / sample space.

    That is :

    P(x) = n(x) / n(s)

    From the question ,

    n(s) = 100

    P(6) = 2/5

    n(6) = ?

    substituting into the formula , we have :

    2/5 = n(x) / 100

    Therefore :

    n(x) = 100 x \frac{2}{5}

    n(x) = 200/5

    n(x) = 40

    Therefore : 6 came up 40 times

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