What should the mean diameter, in inches, be in order to minimize the fraction of bearings that are scrapped?

hello your question is incomplete attached below is the missing part of the question

answer :  3.000 inches

Step-by-step explanation:

In order to minimize the fraction of bearings that are to be scrapped The mean diameter in inches should be 3.000 inches and this is because the diameter of the bearings follows a normal distribution.

The higher the fraction of accepted bearings, the minimal the fraction of rejected fraction bearings

specifications of bearing diameter; 3.000 ± 0.002