Students arrive at the reference desk of the library at an average rate of 12 per hour. Assume PoissOn distribution applies. 1) Compute the probability that exactly 6 students arrive in one hour. a. 0.0122?r b. 0.0254 0. 0.0403 d. 0.1606 2) Compute the probability that exactly 6 students arrive in 30 minutes. a. 0.0127 b. 0.0034 0. 0.0203 d. 0.1606 3) Compute the probability that at least 14 students arrive in the next two hours. a. 0.0?24 b. 0.9892 0. 0.0344 d. 0.8444