Mathematics, 18.03.2020 18:12 tristan4233
Computer keyboard failures can be attributed to electrical defects or mechanical defects. A repair facility currently has 25 failed keyboards, 8 of which have electrical defects and 17 of which have mechanical defects.
(a) How many ways are there to randomly select 6 of these keyboards for a thorough inspection (without regard to order)?
(b) In how many ways can a sample of 6 keyboards be selected so that exactly three have a mechanical defect?
(c) If a sample of 6 keyboards is randomly selected, what is the probability that no more than 2 of these will have an electrical defect?
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Computer keyboard failures can be attributed to electrical defects or mechanical defects. A repair f...
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