An automobile dealer calculates the proportion of new cars sold that have been returned a various numbers of times for the correction of defects during the warranty period. The results are shown in the following table.Number of returns 0 1 2 3 4Proportion 0.28 0.36 0.23 0.09 0.04a. Graph the probability distribution function.b. Calculate and graph the cumulative probability distribution.c. Find the mean of the number of returns of an automobile for corrections for defects during the warranty period.d. Find the variance of the number of returns of an automobile for corrections for defects during the warranty period.
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.
An automobile dealer calculates the proportion of new cars sold that have been returned a various numbers of times for the correction of defects during the warranty period. The results are shown in the following table.
Number of returns 0 1 2 3 4
Proportion 0.28 0.36 0.23 0.09 0.04
a. Graph the
b. Calculate and graph the cumulative probability distribution.
c. Find the mean of the number of returns of an automobile for corrections for defects during the warranty period.
d. Find the variance of the number of returns of an automobile for corrections for defects during the warranty period.
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