It is found that when a particular 4-sided die is rolled a 1 occurs 25.8% of the time, a 2 occurs 24.6% of the time , a 3 occurs 25.9% of the time, and a 4 occurs 23.7% of the time. a) If the die is rolled 25 times, what is the probability that an odd number occurs exactly 14 times? b) What is the expected value of a single roll of the die?