Answer:
0.75 or 75%
Step-by-step explanation:
From May 2014 to August 2014 there are roughly 90 days. So out of the 6,000 students graduating in May, 4,500 are expected to be employed by August. Therefore the probability of a student having a job is :

There is a 0.75 or 75% probability that a student graduating in May 2014 will be employed in their chosen profession by August 2014.