The histogram below gives the length of service of members of the Department of Mathematics and Statistics at a particular university. The classes, in years of service, are 0-4.9,5-9.9, etc., and the vertical axis represents the number of faculty.
(a) What percent of the department faculty have 20 or more years of service?
80
%
(5) If a member of the department is chosen at random to serve on a university committee, what is the probability in decimal form) that the chosen
representitive will have between 20 and 30 years of service?

(c) What is the probability the representative above will have less than 5 years of service given that the person has less than 10 years of service?

Hathenatics and Statistice Faculty
10 -
9
B
7
6
5
10
15
20
25
30
35
Years of Service