In a retirement community, 13% of cell phone users use their cell phones to access the internet. In a random sample of 45 cell phone users, what is the probability that at least 7 used their phones to access the internet? (Give answer as a decimal correct to three decimal places.) What is the probability that at most 4 used their phones to access the internet? (Give answer as a decimal correct to three decimal places.) What is the probability that exactly 12 used their phones to access the internet? (Give answer as a decimal correct to three decimal places.)
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 retirement community, 13% of cell phone users use their cell phones to access the internet. In a random sample of 45 cell phone users, what is the probability that at least 7 used their phones to access the internet?
(Give answer as a decimal correct to three decimal places.)
What is the probability that at most 4 used their phones to access the internet?
(Give answer as a decimal correct to three decimal places.)
What is the probability that exactly 12 used their phones to access the internet?
(Give answer as a decimal correct to three decimal places.)
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