A survey showed that 75% of adults need correction (eyeglasses, contacts, surgery, etc.) for their eyesight. If 11 adults are randomly selected, find the probability that at least 7 of them need correction for their eyesight. How many adult (out of 11) who need correction would you would expect in a large population? What is the standard deviation?
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 survey showed that 75% of adults need correction (eyeglasses, contacts, surgery, etc.) for their eyesight. If 11 adults are randomly selected, find the
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