Let event A be that there are more than three defects and let event B be that there are four or fewer defects.Which of the following statements is true?
A)P(A ∩B)= 0.18
B)P(A∪B)=0.07
C)Events A and B are collectively exhaustive.
D)Events A and B are mutually exclusive.

Question

Quizplus · Accepted Answer

Events A and B are collectively exhaustive because together they cover all possible outcomes of the number of defects. Event A covers the scenario of having more than three defects, while event B covers having four or fewer defects. Together, they account for any number of defects possible, making them collectively exhaustive.

Let Event a Be That There Are More Than Three