An urn contains five black marbles and one orange marbles. Four
marbles are drawn out one...
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An urn contains five black marbles and one orange marbles. Fourmarbles are drawn out one at a time. For each marble, if it isblack the marble is set aside, but if it is orange it is returnedto the urn before the next marble is drawn. Let X be the number ofblack marbles drawn from the urn. Find the probability distributionfor X and find the expectation value and variance of X
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Number of black marble 5Number of orange marble 1Total number of marbles 6We have to draw four marble one each at a time We draw orange marble with replacement ie Orange marblereplaced back to the urn before the next drawand we draw black marbles without
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