a box of 400 ipads has 50 defective and the rest are good
quality. A sample...
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a box of 400 ipads has 50 defective and the rest are goodquality. A sample of 20 ipads is selected at random withoutreplacement. Find the probablity that of the sample selected:
(a) there is exactly 1 defective calculator.
(b) there is at least 1 defective calculator.
(c) there is at most 1 defective calculator
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