Find the probability that either event A or B occurs if the chance of A occurring is .5, the chance of B occurring is .3, and events A and B are independent.
A).80
B).15
C).65
D).85

Question

Quizplus · Accepted Answer

For independent events A and B, the probability that either A or B occurs is given by P(A ∪ B) = P(A) + P(B) - P(A)P(B). Substituting the given probabilities: P(A ∪ B) = 0.5 + 0.3 - (0.5)(0.3) = 0.65.

Find the Probability That Either Event a or B Occurs