Suppose that the diameters of golf balls manufactured by a certain company are normally distributed with

Question:

Suppose that the diameters of golf balls manufactured by a certain company are normally distributed with μ = 1.96 in. and σ = 0.04 in. A golf ball will be considered defective if its diameter is less than 1.90 in. or greater than 2.02 in. What is the percentage of defective balls manufactured by the company? What did the answer indicate?