$10 to do a Math Problem

[BruceZ]

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First one:

x1 = +1.5 with p1 = 0.5
x2 = -1 with p2 = 0.5
E(x) = 0.25

v = p1(x1 - E(x))^2 + p2(x2 - E(x))^2

v = 0.5(1.5 - 0.25)^2 + 0.5(-1-0.25)^2

v = 1.5625

Second one:

x1 = 6 with p1 = 0.16666
x2 = -1 with p2 = 0.83333
E(x) = 0.167

v = p1(x1 - E(x))^2 + p2(x2 - E(x))^2

v = 0.1666(6 - 0.167)^2 + 0.83333(-1 - 0.167)^2

v = 6.8055

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[img]/images/graemlins/heart.gif[/img]

PM me with where you want it sent, or post it.

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8:19 > 8:30. My pot.

Excuse me for posting in the correct forum. I answered in SMP as well as Probability. It didn't occur to me that you actually asked this in THREE forums in less than 3 hours. [img]/images/graemlins/mad.gif[/img]