In a particicular second hand store, 9 of the 42 cell phones sold will have some sort of a defect. If you randomly select two cell phones to purchase, what is the probability that BOTH of them have a defect? NOTE: this is a case of WITHOUT REPLACEMENT, since once you select one, that can't be chosen again for your second pick.
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.
In a particicular second hand store, 9 of the 42 cell phones sold will have some sort of a defect. If you randomly select two cell phones to purchase, what is the
NOTE: this is a case of WITHOUT REPLACEMENT, since once you select one, that can't be chosen again for your second pick.
(Give answer as a decimal correct to four decimal places.)
probability =
Given that 9 of the 42 cell phones sold will have some sort of a defect.
Here, two cell phones are selected without replacement.
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