Business Weekly conducted a survey of graduates from 30 top MBA programs. On the basis of the survey, assume the mean annual salary for graduates 100 years after graduation is 170000 dollars. Assume the standard deviation is 30000 dollars. Suppose you take a simple random sample of 100 graduates. Do not use probability tables to find the probabilities below as they may not be accurate enough. Find the probability that a single randomly selected salary is at least 165000 dollars. P(X > 165000) = Find the probability that a sample of size n = 100 is randomly selected with a mean that is at least 165000 dollars. P( > 165000) =

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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.