A box of manufactured items contains 12 items, of which four are defective. If three items are

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A box of manufactured items contains 12 items, of which four are defective. If three items are drawn at random without replacement, what is the probability that
(a) The first one is defective and the rest are good?
(b) Exactly one of the three is defective?
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Mathematical Statistics With Applications In R

ISBN: 9780124171138

2nd Edition

Authors: Chris P. Tsokos, K.M. Ramachandran

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