SOLUTION: From a shipment of 60 transistors, 4 of which are defective, a sample of 4 transistors is selected at random.
(b) How many samples contain exactly 3 defective transistors?
(c)
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(b) How many samples contain exactly 3 defective transistors?
(c)
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Question 348524: From a shipment of 60 transistors, 4 of which are defective, a sample of 4 transistors is selected at random.
(b) How many samples contain exactly 3 defective transistors?
(c) How many samples do not contain any defective transistors?
You can put this solution on YOUR website! 56 are ok
4 are defective
.
c)
56C4=367,290 samples do not contain any defective transistors.
.
b) 56C1 * 4C3 = 56*4 = 224 samples contain exactly 3 defective transistors.
.
Ed
