Computer keyboard failures can be attributed to electrical defects or mechanical defects. A repair facility currently...

Computer keyboard failures can be attributed to electrical defects or mechanical defects. A repair facility currently has 25 failed keyboards, 6 of which have electrical defects and 19 of which have mechanical defects.

(a) How many ways are there to randomly select 7 of these keyboards for a thorough inspection (without regard to order)? ways

(b) In how many ways can a sample of 7 keyboards be selected so that exactly two have an electrical defect? ways

(c) If a sample of 7 keyboards is randomly selected, what is the probability that at least 6 of these will have a mechanical defect? (Round your answer to four decimal places.)

Expert Solution

orchestra answered 2 years ago

Computer keyboard failures can be attributed to electrical defects or mechanical defects. A repair facility currently...

Computer keyboard failures can be attributed to electrical defects or mechanical defects. A repair facility currently has 25 failed keyboards, 13 of which have electrical defects and 12 of which have mechanical defects. (a) In how many ways can a sample of 7 keyboards be selected so that exactly two have an electrical defect? (b) If a sample of 7 keyboards is randomly selected, what is the probability that at least 6 of these will have a mechanical defect? (Round...

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Computer keyboard failures can be attributed to electrical defects or mechanical defects. A repair facility currently...

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Computer keyboard failures can be attributed to electrical defects or mechanical defects. A repair facility currently...

Customer Months Since Last Service (x1) Type of Repair Electrical (0) Mechanical (1) (x2) Truck (1)...

In line with application of motional emf where mechanical energy can be converted to electrical energy,...

Refer to the Johnson Filtration problem introduced in this section. Suppose that in addition to information on the number of months since the machine was serviced and whether a mechanical or an electrical repair was necessary

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Please write using computer/phone's keyboard, so I can copy the answer directly. Showing image is optional....