A machine precision-cuts tubing such that = 40.00 inches and = 0.03 inch. If the

A machine precision-cuts tubing such that μ = 40.00 inches and σ = 0.03 inch. If the lengths are normally distributed, find the probability that a piece of tubing selected at random measures
(a) Greater than 40.05 inches.
(b) Less than 40.045 inches.
(c) Between 39.95 and 40.05 inches.