Suppose the probability distribution for X = number of jobs held during the past year for students at a school is given in the following table. number of jobs 0 1 2 3 4 probability ??? 0.37 0.29 0.15 0.05 a. find the probability that a randomly selected student did not hold a job in the past year b. find the probability that a randomly selected student held two or fewer jobs in the past year c. find the probability that a randomly selected student held at least one job during the past year. d. Find the expected number of jobs that students held within the pas tyear
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.
Suppose the
| number of jobs |
0 |
1 | 2 | 3 | 4 |
| probability | ??? | 0.37 | 0.29 | 0.15 | 0.05 |
a. find the probability that a randomly selected student did not hold a job in the past year
b. find the probability that a randomly selected student held two or fewer jobs in the past year
c. find the probability that a randomly selected student held at least one job during the past year.
d. Find the expected number of jobs that students held within the pas tyear
Trending now
This is a popular solution!
Step by step
Solved in 2 steps with 2 images
