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Computer keyboard failures can be attributed to electrical defects or mechanical defects. A repair facility currently has 25 failed keyboards, 12 of which have electrical defects and 13 of which have mechanical defects. (a) = 53130 i have this answer need help with other two. How many ways are there to randomly select 5 of these keyboards for a thorough inspection (without regard to order)?   (b) In how many ways can a sample of 5 keyboards be selected so that exactly two have an electrical defect?   (c) If a sample of 5 keyboards is randomly selected, what is the probability that at least 4 of these will have a mechanical defect? (Round your answer to four decimal places.)

Computer keyboard failures can be attributed to electrical defects or mechanical defects. A repair facility currently has 25 failed keyboards, 12 of which have electrical defects and 13 of which have mechanical defects. (a) = 53130 i have this answer need help with other two. How many ways are there to randomly select 5 of these keyboards for a thorough inspection (without regard to order)?   (b) In how many ways can a sample of 5 keyboards be selected so that exactly two have an electrical defect?   (c) If a sample of 5 keyboards is randomly selected, what is the probability that at least 4 of these will have a mechanical defect? (Round your answer to four decimal places.)

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.6: Summarizing Categorical Data
Problem 13CYU
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Computer keyboard failures can be attributed to electrical defects or mechanical defects. A repair facility currently has 25 failed keyboards, 12 of which have electrical defects and 13 of which have mechanical defects.
(a) = 53130 i have this answer need help with other two.
How many ways are there to randomly select 5 of these keyboards for a thorough inspection (without regard to order)?
 
(b)
In how many ways can a sample of 5 keyboards be selected so that exactly two have an electrical defect?
 
(c)
If a sample of 5 keyboards is randomly selected, what is the probability that at least 4 of these will have a mechanical defect? (Round your answer to four decimal places.)
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