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21 February, 08:27

Find the expected value of a random variable x having the following probability distribution.

x (-5,-1,0,1,5,8)

Probability (.12,.16,.28,.22,.12,.1)

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  1. 21 February, 10:06
    0
    The expected value is 0.86.

    Step-by-step explanation:

    To find the expected value, multiply each x value by the corresponding probability, and then sum up these products:

    (-5) (0.12) + (-1) (0.16) + (0) (0.28) + 1 (0.22) + 5 (0.12) + 8 (0.10).

    This comes out to

    -0.60 - 0.16 + 0 + 0.22 + 0.60 + 0.8 = 0.86
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