Probability density function: red and white chips
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Urn I and urn II each have two red chips and two white chips. Two chips are drawn simultaneously from each earn. Let X_1 be the number of red chips in the first sample and X_2 the number of red chips in the second sample. Find the PDF (probability density function) of X_1 + x_2.
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Solution Summary
The solution examines probability density function for red and white chips.
Solution Preview
The following tree diagram applies to X1 and to X2 separately.
X=#Red Chips
R 2 P[R,R] = (1/2)(1/3) = 1/6
1/3
1/2 R 2/3 W 1 P[R,W] = ...
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