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28 August, 17:50

A binomial event has n = 50 trials. The probability of success for each trial is 0.60. Let x be the number of successes of the event during the 50 trials. What are μx and σx?

30 and 3.4641

30 and 5.4772

20 and 3.4641

20 and 5.4772

50 and 3.4641

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  1. 28 August, 18:30
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    30 and 3.4641

    Step-by-step explanation:

    The mean of a binomial distribution is:

    μ = np

    And the standard deviation of a binomial distribution is:

    σ = √ (npq)

    Here, n = 50, p = 0.60, and q = 0.40.

    μ = np = 50 * 0.60 = 30

    σ = √ (npq) = √ (50 * 0.60 * 0.40) = 3.4641
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