1.How are your grades? In a recent semester at a local university,700students enrolled in both Statisticsand PsychologyI Of these students,72 got an A in statistics,77got an A in psychology, and32 got an A in both statistics and psychology. Round the answers to four decimal places, as needed.

a.Find the probability that a randomly chosen student got an A in statistics or psychology or both

b.Find the probability that a randomly chosen student did not get an A in psychology.