A professor teaches a large class and has scheduled an examination for 7:00 p.m. in a different classroom. She estimates the probabilities in the table for the number of students who will call her at home in the hour before the examination asking where the exam will be held.Number of calls 0 1 2 3 4 5Probability 0.10 0.15 0.19 0.26 0.19 0.11Find the mean and standard deviation of the number of calls.
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.
A professor teaches a large class and has scheduled an examination for 7:00 p.m. in a different classroom. She estimates the probabilities in the table for the number of students who will call her at home in the hour before the examination asking where the exam will be held.
Number of calls 0 1 2 3 4 5
Probability 0.10 0.15 0.19 0.26 0.19 0.11
Find the mean and standard deviation of the number of calls.
Trending now
This is a popular solution!
Step by step
Solved in 2 steps with 1 images
