The time to wait for a particular rural bus is distributed uniformly from zero to 86 minutes. 81 riders are randomly sampled to learn how long they waited. 1.) The ‌ 80th percentile sample average...

The time to wait for a particular rural bus is distributed uniformly from zero to  86  minutes.  81 riders are randomly sampled to learn how long they waited.

1.) The ‌ 80th percentile sample average wait time (in minutes) for a sample of ‌ 81 riders is:

A.) 45.3

B.) 40.7

C.) 63.9

D.) 387.0

2.) Would you be surprised, based upon numerical calculations, if the sample average wait time (in minutes) for  81  riders was less than  30  minutes?
 A.) Yes

 B.) No

 C.) There is not enough information.