refer to the following table. first event second event a1 a2 a3 total b1 4 12 11 27 b2 10 15 9 34 total 14 27 20 61 click here for the excel data file a. determine p(b2). (round your answer to 2 decimal places.) b. determine p(b1 | a3). (round your answer to 2 decimal places.) c. determine p(a2 and b2). (round your answer to 2 decimal places.)