The travel time for a college student traveling between her home and her college is uniformly distributed between 40 and 90 minutes.The probability that she will finish her trip in 80 minutes or less is
A) 0.02
B) 0.8
C) 0.2
D) 1.00

Question

Quizplus · Accepted Answer

The uniform distribution has a constant probability. The range is 40 to 90 minutes, so the total range is 50 minutes. The probability of finishing in 80 minutes or less is the range from 40 to 80 minutes, which is 40 minutes. The probability is 40/50 = 0.8.

The Travel Time for a College Student Traveling Between Her