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Let a bowl contain 30 chips of the same size and shape. Only one of those...


Let a bowl contain 30 chips of the same size and shape. Only one of those chips is red. Continue to draw chips from the bowl, one at a time at random and without replacement, until the red chip is drawn.
(a) Find the p.m.f. of X, the number of trials needed to draw the red chip. Show your work.
(b) Compute the mean and variance of X. Show your work.
(c) Determine P( X less than or equal to 15). Show your work.
Math   Statistics-And-Probability   
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