Suppose that 1 out of 5 cars needs an oil change. Suppose we are to randomly select 8 cars. Let X be the number of cars selected out of the 8 that need an oil change. Find the following probabilities: a. P(X+3) b. P(X>3) c. Let Y be the number of cars selected out of the 8 that do NOT need an oil change. Find P (Y>*greater than or equal to* 5) that is, the probability that the number of cars selected (out of 8) that does NOT need an oil change is greater than or equal to 5.
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.
Suppose that 1 out of 5 cars needs an oil change. Suppose we are to randomly select 8 cars. Let X be the number of cars selected out of the 8 that need an oil change. Find the following probabilities:
a. P(X+3)
b. P(X>3)
c. Let Y be the number of cars selected out of the 8 that do NOT need an oil change. Find P (Y>*greater than or equal to* 5) that is, the probability that the number of cars selected (out of 8) that does NOT need an oil change is greater than or equal to 5.
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