A sales firm receives an average of three calls per hour on its toll-free number. Suppose you were asked to find the probability that it will receive at least three calls, in a given hour: (a) (i) which distribution does this scenario fit and why? (ii) Define the variable of interest, X. (iii) What are the possible values of X? (b) What is the probability that in a given hour it will receive at least three calls?
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 sales firm receives an average of three calls per hour on its toll-free number. Suppose you were asked to find the probability that it will receive at least three calls, in a given hour:
(a) (i) which distribution does this scenario fit and why?
(ii) Define the variable of interest, X.
(iii) What are the possible values of X?
(b) What is the probability that in a given hour it will receive at least three calls?
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