Consider a Situation Where the Lower Control Limit of a Percent

Multiple Choice

Consider a situation where the lower control limit of a percent defective chart is negative. It must be that ________.

A) the absolute value of the negative LCL must be taken to arrive at a positive value
B) an error was made in computing the LCL because negative values are impossible
C) the process is out of control and must be redesigned
D) the lower limit is set to zero