a) Find the standard deviation. b) What is the percentage of students who have scored less than 72? c) If a random sample of 53 students is selected from the college, what is the probability that the mean of the sample will be greater than 88?

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A: Given a right angled triangle in which adjacent side is 72 units and hypotenuses is 93 units.

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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.