MAT 133: Ch. 7 Review WS 2 p.3 5. In 2013, the amount of water Americans drank annually was normally distributed with a mean of 23.2 gallons and a standard deviation of 2.7 gallons. This distribution is shown below with some areas shaded that are NOT equal in size. (Source) a. Find the three missing pieces of the graph of this distribution below (Show all work and give calculator entries and 3 decimal places.) A1=0.518 A2= A3= 12.5 15.0 17.5 20.0 22.5 25.0 30.0 32.5 X1= X2=27.310 b. Provide two interpretations of X2 and A; in the context of the situation. (One using proportion, one using probability; Give units)