Probability of At Least One Let A = the event of getting at least 1 defective iPhone when 3 iPhones are randomly selected with replacement from a batch. If 5% of the iPhones in a batch are defective and the other 95% are all good, which of the following are correct? a. P(Ā) = (0.95) (0.95) (0.95) = 0.857 b. P(A) = 1 − (0.95) (0.95) (0.95) = 0.143 c. P(A) = (0.05) (0.05) (0.05) = 0.000125
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. P(Ā) = (0.95) (0.95) (0.95) = 0.857
b. P(A) = 1 − (0.95) (0.95) (0.95) = 0.143
c. P(A) = (0.05) (0.05) (0.05) = 0.000125
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