Assume That the Total Number of Defects in 50 Samples

Multiple Choice

Assume that the total number of defects in 50 samples are 450. Which of the following statements are not true regarding the c chart for the number of defectives?

A) The center line of the chart is at height 9
B) The lower control limit (LCL) is 0
C) The upper control limit (UCL) is 18
D) All of the above statements are true
E) None of the above statements are true