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.Determine the estimated number of standard deviations of process leeway.

A) 3
B) 1.667
C) 3.72
D) 1.443
E) .72