#11
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Re: $10 to do a Math Problem
1: Some
2: More |
#12
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Re: $10 to do a Math Problem
1.bastard
2.bastards |
#13
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Re: $10 to do a Math Problem
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 |
#14
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Re: $10 to do a Math Problem
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#15
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Re: $10 to do a Math Problem
1) 1.5:1 x .50 = 9
2) 6/1 = 61% |
#16
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Re: $10 to do a Math Problem
#1 is .316
EDIT: WTF @ redjoker? http://hspm.sph.sc.edu/COURSES/J716/a01/stat.html EDIT2: Grr, 1.56 is right. I was using +1.5 and 0, not +1.5 and -1 |
#17
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Re: $10 to do a Math Problem
Damn, RedJoker beat me to it. I can confirm those answers.
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#19
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Re: $10 to do a Math Problem
[ QUOTE ]
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 [/ QUOTE ] [img]/images/graemlins/heart.gif[/img] PM me with where you want it sent, or post it. |
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