Following is the probability distribution of a random variable that represents the number of extracurricular activities a college freshman participates in. Part 1 of 3 x 0 1 2 3 4 P(x) 0.07 0.13 0.45 0.21 0.14 Send data to Excel (a) Find the probability that a student participates in exactly four activities. The probability that a student participates in exactly four activities is 0.14 Part: 1/3 Part 2 of 3 (b) Find the probability that a student participates in less than three activities.