For a process, sample size=5, process standard deviation=0.15, mean=1.5, and the std. deviation of mean is 0.0671. What will be the value of 3σ upper control limit for the construction of control chart?

For a process, sample size=5, process standard deviation=0.15, mean=1

1.	For a process, sample size=5, process standard deviation=0.15, mean=1.5, and the std. deviation of mean is 0.0671. What will be the value of 3σ upper control limit for the construction of control chart?
A.	1.7
B.	1.29
C.	1.92
D.	0.170
Answer» B. 1.29