An chart with three sigma limits has parameters as follows UCL
An chart with three-sigma limits has parameters as follows:

UCL = 104

Center line = 100

LCL = 96

n = 5

Suppose the process quality characteristic being controlled is normally distributed with a true mean of 98 and a standard deviation of8. What is the probability that the control chart would exhibit lack of control by at least the third point plotted?

An chart with three sigma limits has parameters as follows UCL