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)0.4
B)0.2
C)0.1
D)0.3
E)0.167

Question

Quizplus · Accepted Answer

The total time interval from 8:40 a.m. to 9:30 a.m. is 50 minutes. The interval from 9:00 to 9:10 a.m. is 10 minutes. Since the arrival times are uniformly distributed, the probability is the ratio of the desired interval to the total interval, which is 10/50 = 0.2.

A Study Shows That Employees That Begin Their Work Day