Question 1
Each manager of a corporation was rated as being either a good, fair, or poor manager by his/her boss. The manager's educational background was also noted. The data appear below:

What is the probability that a randomly chosen manager is either a good managers or has an advanced degree?
◦

◦

◦

◦

Question 2
Four hundred accidents that occurred on a Saturday night were analyzed. The number of vehicles involved and whether alcohol played a role in the accident were recorded. The results are shown below:
Number of Vehicles Involved |

Suppose that one of the 400 accidents is chosen at random. What is the probability that the accident involved alcohol or a single car?
◦

◦

◦

◦