Each of 12 laptops was returned to the dealer due to a strange sound from the fan when they were running. Suppose 7 of these laptops have a faulty device and the other five have less serious problems. If tested at random, let X be the number in the first six test takers who have a faulty device. The P (X <= 4), is: a) 0.121 b) 0.879 c) 0.114 d) 0.125
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.
Each of 12 laptops was returned to the dealer due to a strange sound from the fan when they were running. Suppose 7 of these laptops have a faulty device and the other five have less serious problems. If tested at random, let X be the number in the first six test takers who have a faulty device. The P (X <= 4), is:
a) 0.121
b) 0.879
c) 0.114
d) 0.125
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