The average age of the students in Class A is more than 11 years old. If ten out of the eleven students are 11 years old, which of the following could be the age of the remaining student?

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Q: I need help with this problem

A: To determine the number of students in the class.

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A: We have to use combination formula. Formula : Crn = n!r!(n-r)!

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.