Suppose the probability distribution for X = number of jobs held during the past year for students at a school is as follows:
|
Number of jobs, X
|
0
|
1
|
2
|
3
|
4
|
|
Probability
|
.14
|
.37
|
.29
|
.15
|
.05
|
a. Find P(X ≤ 2), the probability that a randomly selected student held two or fewer jobs during the past year.
b. Find the probability that a randomly selected student held either one or two jobs during the past year.
c. Find P(X > 0), the probability that a randomly selected student held at least one job during the past year.
d. Create a table that gives the cumulative probability distribution for X.