Question

Events A and B are mutually exclusive. Suppose event A occurs with probability 0.21 and event B occurs with probability 0.72.

a. Compute the probability that A does not occur or B does not occur (or both).

b. Compute the probability that either B occurs without A occurring or A and B both occur.

Answer 1

a)P(A or B does does not occur)=1-P(both occurs)=1-0=1.00 (as events are mututally exclusive)

b) Probability that either B occurs without A or A and B both occur =P(B)+P(A n B)=0.72+0.00=0.72