Tanker trucks are designed to carry huge quantities of gasoline from refineries to filling stations. A factory that manufactures the tank of the trucks claims to manufacture tanks with a capacity of 8550 gallons of gasoline. The actual capacity of the tanks is normally distributed with mean LaTeX: \mu = 8544µ=8544 gallons and standard deviation LaTeX: \sigma = 12σ=12 gallons. a. Find the z-score corresponding to a tank with a capacity of 8550 gallons. b. What is the probability that a randomly selected tank will have a capacity of less than 8550 gallons?