Calculate P (A or B) in the following scenarios: b. P(A)=0.21, P(B) = 0.15, P(A and B)=0.03 P (A or B)=
To calculate P(A or B), we need to add the probabilities of A and B and then subtract the probability of A and B (as it would be counted twice otherwise).
Given information:
P(A) = 0.21
P(B) = 0.15
P(A and B) = 0.03
P(A or B) = P(A) + P(B) - P(A and B)
P(A or B) = 0.21 + 0.15 - 0.03
P(A or B) = 0.33
Therefore, P(A or B) is 0.33.