Question 38-40 are based on the following question:

The driving time between two cities follows a uniform distribution with a minimum time of 10 minutes and a maximum time of 22 minutes.

1. Calculate the mean of the distribution?
   1. Undefined
   2. 10 minutes
   3. 16 minutes

D. 22 minutes

1. What is the standard deviation of the distribution?
   1. 8.0 minutes
   2. 2.2 minutes
   3. 3.5 minutes
   4. 10.0 minutes

1. What is the probability of driving between 15 and 30 minutes?
   1. .0012
   2. .2376
   3. .5833
   4. .9845