Find the control limits for a p-chart with = 0.75 and s = 0.06.
A)LCL = 0.39 and UCL = 0.75
B)LCL = 0.69 and UCL = 0.81
C)LCL = 0.57 and UCL = 0.93
D)LCL = 0 and UCL = 0.06

Question

Find the control limits for a p-chart with  = 0.75 and s = 0.06.
A)LCL = 0.39 and UCL = 0.75 
B)LCL = 0.69 and UCL = 0.81 
C)LCL = 0.57 and UCL = 0.93 
D)LCL = 0 and UCL = 0.06

Quizplus · Accepted Answer

For a p-chart, the formula for control limits is: 
LCL = p - 3s 
UCL = p + 3s 
Substituting the given values, we get: 
LCL = 0.75 - 3(0.06) = 0.57 
UCL = 0.75 + 3(0.06) = 0.93 
Therefore, the best choice is C.

Find the Control Limits for a P-Chart with =