A consumer organization inspecting new cars found that many had appearance defects (such as dents, scratches, or paint chips). While none of the new cars had more than three of these defects, 7% had exactly three, 11% had exactly two, and 21% had exactly one such defect. If we randomly select a new car and let X = the number of appearance defects on the selected car, then what are the expected value and standard deviation of X?
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.
A consumer organization inspecting new cars found that many had appearance defects (such as dents, scratches, or paint chips). While none of the new cars had more than three of these defects, 7% had exactly three, 11% had exactly two, and 21% had exactly one such defect. If we randomly select a new car and let X = the number of appearance defects on the selected car, then what are the
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