Question

A manager records the number of hours, X, each employee works on his or her shift and develops the probability distribution below. Fifty people work for the manager. How many people work 4 hours per shift?

Probability Distribution
Hours Worked: X
Probability: P(X)
3
0.1
4
?
5
0.14
6
0.3
7
0.36
8
0.06
0
1
2
4