A sign on the pumps at a gas station encourages customers to have their oil checked and claims that 1 out of 7 cars need to have oil added. If this is true, what is: (a) The probability that 1 out of the next 4 cars need oil. (b) The probability that 2 out of the next 8 cars need oil. (c) The expectation and variance of the number of cars out of a total of 40 that need oil.
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 sign on the pumps at a gas station encourages customers to have their oil checked and claims that 1
out of 7 cars need to have oil added. If this is true, what is:
(a) The
(b) The probability that 2 out of the next 8 cars need oil.
(c) The expectation and variance of the number of cars out of a total of 40 that need oil.
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