A Tim Horton's has recently opened up in Edmonton. It is observed that, on any given morning, the time it takes for a car to be served after ordering in the drive-thru follows a normal distribution with = 8 minutes and = 2.5 minutes. (a) What is the probability that it takes less than 5.6 minutes for a randomly selected car to be served after ordering? (Round your answer to four decimal places, if needed.)