The Institute for Higher Education Policy, a Washington, DC-based research firm, studied the payback of student loans for 1.8 million college students who had student loans that began to become due six years prior. The study found that 50% of the student loans were being paid back in a satisfactory fashion, and 50% of the student loans were delinquent. The following joint probability table shows the probabilities of a student's loan status and whether or not the student had received a college degree.

a. What is the probability that a student with a student loan had received a college degree?