Below is a partially completed probability model where X represents the number of cars in a fast food drive-thru at any given time. Answer the questions below. (a) Fill in the missing probability. Number 0 1 2 3 5 6 7 8 of cars P(x) 0.07 0.15 0.27 0.21 0.12 0.03 0.05 0.02 (b) What is the expected number of cars in the drive-thru? (c) What is the standard deviation? Round to 4 decimal places. (d) What is the probability there are 3 cars in the drive-thru? (e) What is the probability there are at least 5 cars in the drive-thru? (f) What is the probability there are less than 2 cars in the drive-thru? 4.

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A:

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A:

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A:

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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.