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1 March, 23:30

An urn contains three red balls, five white balls, and two black balls. Four balls are drawn from the urn at random without replacement. For each red ball drawn, you win $6, and for each black ball drawn, you lose $9. Let X represent your net winnings Compute E (X), your expected net winnings E (x)

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  1. 2 March, 00:03
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    Step-by-step explanation:

    total number of balls = 3+5+2 = 10

    Probability of getting red P (R) = 3/10

    Probability of getting white P (W) = 5/10

    Probability of getting black P (B) = 2/10

    for each red ball drawn you win $6 and for each black ball drawn you loose $9 dollars

    E (X) = 6*3/10 + 0*5/10 - 9*2/10 = 0

    E (X) = 0
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