A study shows that employees that begin their work day at 9:00 a.m.vary their times of arrival uniformly from 8:40 a.m.to 9:30 a.m.The probability that a randomly chosen employee reports to work between 9:00 and 9:10 is:
A)40%
B)20%
C)10%
D)30%
E)16.7%

Question

Quizplus · Accepted Answer

The total range of arrival times is 50 minutes (from 8:40 to 9:30). The time interval from 9:00 to 9:10 is 10 minutes. The probability is the ratio of the interval to the total range: 10/50 = 0.20 or 20%.

A Study Shows That Employees That Begin Their Work Day