A random customer buys either brand A, brand B, or brand C with probabilities 0.25, 0.30, 0.35. There is a 0.10 probability that the customer will not buy anything. a) Of the next 4 customers, what is the probability that there will be at least one purchase each for brands A, B and C? b) What is the probability that the 3rd purchase of brand B is made before the 6th customer makes his purchase?
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 random customer buys either brand A, brand B, or brand C with probabilities 0.25, 0.30, 0.35. There is a 0.10
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