The latest poll of randomly selected Pennsylvanians indicates that the probability of someone coming from a rural background is .65, the probability of coming from an urban background is .20, and the probability of coming from a background described as neither is .15 From a random selection of 20 Pennsylvanians, and assuming the data fit a binomial distribution: a) Find the probability that at least 10 come from an urban background.
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.
The latest poll of randomly selected Pennsylvanians indicates that the
coming from a rural background is .65, the probability of coming from an urban background is
.20, and the probability of coming from a background described as neither is .15
From a random selection of 20 Pennsylvanians, and assuming the data fit a binomial distribution:
a) Find the probability that at least 10 come from an urban background.
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