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January 30, 2015

January 30, 2015

Posted by **sh** on Thursday, May 28, 2009 at 7:13am.

P(NHL|W)=(0.4x0.12)/(0.4x0.12)(0.18x0.6) ?

- math -
**PC**, Thursday, May 28, 2009 at 7:45amYour answer tells me that you are in the right direction, but there is something wrong with the expression:

(0.4x0.12)/(0.4x0.12)(0.18x0.6)

because it evaluates to 9.259 > 1.

Think of a bag of 4 red and 6 blue marbles. The chances of drawing a red would be

4/(4+6)=0.4.

Rework your expression and I am sure you'll get the right answer.

- math -
**Damon**, Thursday, May 28, 2009 at 7:45amyes,y ou have it right

say there are 100 total

60 E

40 W

E in NHL = .18*60 = 10.8

W in NHL = .12*40 = 4.8

Total = 10.8+4.8 = 15.6

fraction W in total = 4.8/15.6

- math -
**Damon**, Thursday, May 28, 2009 at 7:47amOh, but you multiplied on the bottom instead of adding.

- math -
**sh**, Thursday, May 28, 2009 at 8:01amWhoops, a typo. I finally got one of these questions right :)

Thank you!

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