When exposed to heat, the reaction time of a certain chemical always occurs after 12 minutes, but before 16 minutes. Reaction times for this chemical can be modeled by a uniform distribution. a. Find the probability that the reaction will happen after 14 minutes. Shade the area of the graph and calculate the numerical value of the probability. b. Find the probability that the reaction will occur between 14 minutes and 15 minutes. Shade the area of the graph and calculate the numerical value of the probability.