Which of the following pairs of events are disjoint? (Select all that apply)
a. E1 = [Patient is dead],E2 = [Patient is alive]
b. E1 = [A litter contains 10 mice], E2 = [A litter contains 15 or more mice]
c. E1 = [A patient weighs between 100 and 200 lbs], E2 = [A patient weighs between 80 and 130 lbs]
d. E1 = [A subject has green eyes], E2 = [A subject is male]