A Precision Parts Manufacturer Produces Bolts for Use in Military $\bar{x}$

Multiple Choice

A precision parts manufacturer produces bolts for use in military aircraft.The specifications for bolt length are 37.50 ± 0.25 cm.The company has established an $\bar{x}$ -chart and an R-chart using samples of size five.The center lines for the $\bar{x}$ -chart and R-chart are set at 37.35 cm and 1.05 cm,respectively.What is the value of Cpk for this process?

A) 0.07
B) 0.28
C) 0.75
D) 0.03