Roll two fair dice. each die has six faces. a. let a be the event that either a 3 or 4 is rolled first followed by an odd number. p(a) = .33 round your answer to two decimal places. b. let b be the event that the sum of the two dice is at most 7. p(b) = round your answer to two decimal places. c. are a and b mutually exclusive events? (yes or no) yes d. are a and b independent or dependent events? (independent or dependent)