The estimated probability that a Brand A, a Brand B, and a Brand C plasma TV will last at least 30,000 hr is 0.85, 0.80, and 0.75, respectively. Of the 4500 plasma TVs that Ace TV sold in a certain year, 1000 were Brand A, 1500 were Brand B, and 2000 were Brand C. If a plasma TV set sold by Ace TV that year is selected at random and is still working after 30,000 hr of use, answer the following. (Round your answers to three decimal places.) (a) What is the probability that it was a Brand A TV? (b) What is the probability that it was not a Brand A TV?
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.
The estimated probability that a Brand A, a Brand B, and a Brand C plasma TV will last at least 30,000 hr is 0.85, 0.80, and 0.75, respectively. Of the 4500 plasma TVs that Ace TV sold in a certain year, 1000 were Brand A, 1500 were Brand B, and 2000 were Brand C. If a plasma TV set sold by Ace TV that year is selected at random and is still working after 30,000 hr of use, answer the following. (Round your answers to three decimal places.)
(b) What is the probability that it was not a Brand A TV?
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