For each of the following situations, tell whether the two probabilities should be equal:
a. The probability that the mean Verbal SAT score of all students in a state is below 500, and the probability that the mean Verbal SAT score of all students in a state is 500 or less
b. The probability of a household having fewer than three cats, and the probability of a household having no more than three cats
c. The probability of a particular baseball player pitching more than one no-hitter in a season, and the probability of the baseball player pitching one or more nohitters in a season