Final answer:
The probability of P(E or F), when E and F are mutually exclusive, is equal to the sum of their individual probabilities.
Step-by-step explanation:
To find the probability of P(E or F) when E and F are mutually exclusive, we can use the formula:
P(E or F) = P(E) + P(F)
Since E and F are mutually exclusive, they cannot occur at the same time. This means that the probability of E or F occurring is simply the sum of the probabilities of E and F individually.
For example, if P(E) = 0.3 and P(F) = 0.4, then
P(E or F) = 0.3 + 0.4 = 0.7