Porphyrin is a pigment in blood protoplasm and other body fluids that is significant in body energy and storage. Letxbe a random variable that represents the number of milligrams of porphyrin per deciliter of blood. In healthy circles,xis approximately normally distributed with mean=39and standard deviation=13. Find the following probabilities. (Round your answers to four decimal places.)

(a)xis less than 60

(b)xis greater than 16

(c)xis between 16 and 60

(d)xis more than 60 (This may indicate an infection, anemia, or another type of illness.)