Question

The time it takes to completely clean an office building follows an exponential distribution with a mean of 135 minutes. What is the probability of cleaning an office building in 135 minutes or less?

Answer 1

0.63212

Explanation:

Given that :

Mean cleaning time (μ) = 135

Probability of cleaning the office is 135 minutes or less

Using an exponential distribution probability calculator :

P(X ≤ 135) = 0.63212