You want to determine the control lines for a p-chart for quality control purposes. If the desired confidence level is 99 percent, which of the following values for Z would you use in computing the UCL and LCL?
A) 0.99
B) 2
C) 2.58
D) 3
E) None of these

Question

Quizplus · Accepted Answer

For a 99% confidence level, the Z-value used in control charts is typically 2.58, which corresponds to the standard normal distribution.

You Want to Determine the Control Lines for a P-Chart