At the entrance to one of the residence halls on campus, the residents can choose to enter one of three doors. Custodians noticed that door #3 was frequently broken and suggested that more students used that door because it has a hands free mechanism. Students counted the number of students entering each door on a given day to see if the custodians were right. Use Chi-Square to determine if the custodians were right Door Students Entering 1 60 2 56 3 94
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.
At the entrance to one of the residence halls on campus, the residents can choose to enter one of three doors. Custodians noticed that door #3 was frequently broken and suggested that more students used that door because it has a hands free mechanism. Students counted the number of students entering each door on a given day to see if the custodians were right. Use Chi-Square to determine if the custodians were right
| Door | Students Entering |
| 1 | 60 |
| 2 | 56 |
| 3 | 94 |
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