Adelle keeps track of the time her bus arrives at her stop. Since she has been keeping track, her bus has arrived on time 16 days and has been late on 4 days. Based on her data, what percentage of the time should Adele expect the bus to be late?

Adelle keeps track of the time her bus arrives at her stop Since she has been keeping track her bus has arrived on time 16 days and has been late on 4 days Base class=