Among 25- to 30-year-olds, 28% say they have operated heavy machinery while under the influence of alcohol. Suppose three 25- to 30-year-olds are selected at random. Complete parts (a) through (d) below. (a) What is the probability that all three have operated heavy machinery while under the influence of alcohol? (Round to four decimal places as needed.) (b) What is the probability that at least one has not operated heavy machinery while under the influence of alcohol? (Round to four decimal places as needed.) (c) What is the probability that none of the three have operated heavy machinery while under the influence of alcohol? (Round to four decimal places as needed.) (d) What is the probability that at least one has operated heavy machinery while under the influence of alcohol? (Round to four decimal nlares ac neaded i

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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.