Question

4. The average time it takes the loading dock workers at the Not-So-Speedy Shipping Company to

load a delivery truck full of packages is 120 minutes. Given that loading time follows an exponential

probability distribution, answer the following questions. Round the percents to 2 decimals,

like 12.34%.

(a) What is the probability workers will load a truck in 60 minutes or less?

(b) What is the probability workers will load a truck in 150 minutes or less?

(c) What is the probability workers will load a truck in 90 minutes or more?

(d) What is the probability workers will load a truck in 120 minutes or more?

(e) What's the probability workers load a truck in between 100 & 200 minutes?