A Powder Metal Manufacturing Company Is Producing Sleeves for a Locking

Multiple Choice

A powder metal manufacturing company is producing sleeves for a locking mechanism.The target (nominal) value for the inside diameter is 1 inch.The inside diameter specifications are 1 ± .005 inches.Assume that the process is in statistical control with $\overline { \overline { X } }$

= 1) 0002 inches, $\overline { \mathrm { R } }$
= ) 003 inches,and subgroup size of 5.What is the sigma level capability for this process?

A) 3.0
B) 3.72
C) 1.6
D) 1.0
E) 2.72