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. i. How many ways are there to randomly select 5 of these keyboards for an inspection? ii. In how many ways can a sample of 5 keyboards be selected so that exactly 2 have electrical defects? iii. If a sample of 5 keyboards is randomly selected, what is the probability that at least 1 of these will have a mechanical defect
Contingency Table
A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.
Binomial Distribution
Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.
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.
i. How many ways are there to randomly select 5 of these keyboards for an
inspection?
ii. In how many ways can a sample of 5 keyboards be selected so that exactly 2 have
electrical defects?
iii. If a sample of 5 keyboards is randomly selected, what is the probability that at
least 1 of these will have a mechanical defect
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