Final answer:
To find the probability that Felicity enrolls in math or speech classes, add the individual probabilities and subtract the probability of Felicity enrolling in both classes.
Step-by-step explanation:
b. To find the probability that Felicity enrolls in math or speech classes, you need to find the sum of the individual probabilities: P(M) + P(S) - P(M AND S).
c. To determine if events M and S are independent, you need to compare P(MS) and P(M). If they are equal, the events are independent.
d. To check if events M and S are mutually exclusive, you need to compare P(M AND S) with 0. If P(M AND S) = 0, the events are mutually exclusive.