The waiting time at an elevator is uniformly distributed between 30 and 200 seconds. What is the probability a rider must wait between 1 minute and 1.5 minutes?
A) 0.1765
B) 0.3529
C) 0.5294
D) 0.8824

Question

Quizplus · Accepted Answer

The waiting time is uniformly distributed between 30 and 200 seconds. 1 minute is 60 seconds and 1.5 minutes is 90 seconds. The probability is calculated as (90-60)/(200-30) = 30/170 = 0.1765.

The Waiting Time at an Elevator Is Uniformly Distributed Between