Warranty records show that the probability that a new car needs a warranty repair in the first 90 days is 0.05. If a sample of 3 new cars is selected: What is the probability that none needs a warranty repair? __________________ What is the probability that at least one needs a warranty repair? _________________ What is the probability that more than one needs a warranty repair? __________________ The key components of this problem are:Sample size (trials) = 3 new carsProbability of “success” = 5%Number of “successes”: A: Exactly 0B: 1 or moreC: More than one
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.
- Warranty records show that the
probability that a new car needs a warranty repair in the first 90 days is 0.05. If a sample of 3 new cars is selected:
- What is the probability that none needs a warranty repair? __________________
- What is the probability that at least one needs a warranty repair? _________________
- What is the probability that more than one needs a warranty repair? __________________
The key components of this problem are:
Sample size (trials) = 3 new cars
Probability of “success” = 5%
Number of “successes”:
A: Exactly 0
B: 1 or more
C: More than one
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