Two students from a certain university are randomly selected from all other students who attend that university. The two students do not know each other. Let a= the first student has taken statistics and let b= the second student has taken statistics. These two events are:
Disjoint
independent
neitehr disjoint or independent
both
A student who attends a university is randomly selected from all students at the university. Let A=the student has taken statistics and let B=the student has taken calculus. True or false, these two events are disjoint.