Select the Pair of Events That are Disjoint for a Single

Question

Select the pair of events that are disjoint for a single trial.
A) Randomly selecting a dentist; Randomly selecting a female doctor
B) Randomly selecting a bird; Randomly selecting a bald eagle
C) Randomly selecting someone taking Vitamin E; Randomly selecting someone in a control group taking no supplements
D) Randomly selecting someone with type A blood; Randomly selecting someone with Rh negative blood

Accepted Answer

Disjoint events cannot occur simultaneously. In a single trial, a person cannot be both taking Vitamin E and in a control group taking no supplements.