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    nyc123rr's Avatar
    nyc123rr Posts: 4, Reputation: 1
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    #1

    Aug 1, 2012, 01:07 PM
    Math solution needed
    for a group of four men , the probability distribution for the number x who live through the next year is as given in the accompanying table. Find out the mean and the standard deviation
    x | p(x)
    0 | 0.05
    1 | 0.15
    2 | 0.45
    3 | 0.25
    4 | 0.10
    Unknown008's Avatar
    Unknown008 Posts: 8,076, Reputation: 723
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    #2

    Aug 1, 2012, 10:27 PM
    Use the formulae that you know of. What do you get?

    Also, duplicate post: https://www.askmehelpdesk.com/mathem...lp-689423.html
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