Posted by **angela** on Monday, May 28, 2012 at 2:19am.

Urn I and Urn II each have 2 red chips and 2 white chips. Two chips are drawn simultaneously from each urn. Let X1 be the number of red chips in the first sample and X2 the number of red chips in the second sample. Find the pdf of X1 + X2

- statistics -
**MathMate**, Monday, May 28, 2012 at 3:15pm
Pdf of X1 = pdf of X2

=(1/2,1/2) 0≤X1≤1, X1∈Z

= 0 otherwise

Pdf of X = X1 and X2

= (1/4, 1/2, 1/4) 0≤X≤2, X∈Z

= 0 otherwise

## Answer this Question

## Related Questions

- math - Urn I and urn II each have two red chips and two white chips. Two chips ...
- statistics - an urn contains 3 blue chips and 7 red chips. sequentially draw 3 ...
- math - an urn contains 3 blue chips and 7 red chips. sequentially draw 3 chips ...
- Probability - urn1 contains 3 red chips and 1 white chip. urn2 contains 2 red ...
- Probability - an urn contains 40 red chips and sixty white chips. six chips are ...
- Probability PLEASE HELP - A box contains exactly five chips, three red and two ...
- Probability - A box contains exactly five chips, three red and two white. Chips ...
- college - a box contains 100 red chips, 100 white chips, and 100 blue chips! ...
- math - Two chips are selected from a box containing 6 blue chips, 4 red chips, ...
- college - A box contains 4 red and 3 blue chips. What is the probability when 3 ...