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