Q. No. 3 Max Marks 06

The finished inside diameter of a piston ring is normally distributed with a mean of 10 centimeters and a

standard deviation of 0.03 centimeter.

a. What proportion of rings will have inside diameters exceeding 10.075 centimeters?

b. What proportion of rings will have inside diameters lower than or equal 10.03?

c. What proportion of rings will have inside diameters greater than 10.03 but lower than or equal

10.05?