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September 20, 2014

Posted by **F0reveryoung** on Saturday, April 7, 2012 at 1:59pm.

Find the probability distribution for

Number of Red Balls:

0 =

1 =

2 =

3 =

- Probability Distribution -
**Priscilla**, Saturday, April 7, 2012 at 2:41pmtotal amount of balls = 15 red + 19 white = 34 balls

0 - 0/34 = 0

1 - 1/34

2 - 2/34 = 1/17

3 - 3/34

- Probability Distribution -
**Reiny**, Saturday, April 7, 2012 at 2:43pmProb red = 15/34

prob white = 19/34

when picking three:

prob(0 red) = C(3,0) (19/34)(18/33)(17/32) = 57/352

prob(1 red) = C(3,1) (15/34)(19/33)(18/32) = 2565/5984

prob(2red) = C(3,2) (15/34)(14/33)(19/32) = 1998/5984

prob (3red) = C(3,3)(15/34)(14/33)(13/32) = 455/5984

notice that the sum of the 4 fractions above is 5984/5984 = 1

- typo - Probability Distribution -
**Reiny**, Saturday, April 7, 2012 at 2:44pmthe 2nd last prob calculation should be 1995/5984

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