Suppose that a tire manufacturer uses and R charts based on subgroups of size 4 to monitor tire diameter.The andR charts are found to be in statistical control,with inches.A histogram of the tire diameter measurements indicates that these measurements are approximately normally distributed.Find the sigma level capability of the process.
A)1.93
B)3.22
C)0.64
D)0.22

Question

Suppose that a tire manufacturer uses  and R charts based on subgroups of size 4 to monitor tire diameter.The  andR charts are found to be in statistical control,with  inches.A histogram of the tire diameter measurements indicates that these measurements are approximately normally distributed.Find the sigma level capability of the process.
A)1.93 
B)3.22 
C)0.64 
D)0.22

Quizplus · Accepted Answer

The Answer of Suppose that a tire manufacturer uses  and R charts based on subgroups of size 4 to monitor tire diameter.The  andR charts are found to be in statistical control,with  inches.A histogram of the tire diameter measurements indicates that these measurements are approximately normally distributed.Find the sigma level capability of the process.
A)1.93 
B)3.22 
C)0.64 
D)0.22

Suppose That a Tire Manufacturer Uses and R Charts