QUESTION 19 Information for Questions 19-21: The S&P 500 is a collection of S500 stocks of publicly traded companies, Using data obtained from YahoolFinance, the monthly rates of return of the S& P 500 from 1950 through 2013 normally distributed. The mean rate of return is 0.007443 and the standard deviation is 0.04135. What is the probability that a randomly selected month has a positive rate of return? That is, what is PX > 0)?

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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.