Jack Joyner, Director of Quality Control at Covington Castings (CC)

Multiple Choice

Jack Joyner, Director of Quality Control at Covington Castings (CC) , is designing a c chart to monitor the number of nonconformances per aluminum casting produced at CC.The total number of nonconformances for 26 castings is 91.The lower control limit for Jack's c chart is ___________.

A) 1.37
B) -2.11
C) 3.50
D) -1.00
E) 0.00