Question 3 Lots of 2000 toasters are inspected with an avera

Question 3.                                                                                         

Lots of 2000 toasters are inspected with an average of 12 defects per lot. What would the control limits be for a control chart of this data?   

UCL = ___________       LCL = __________

Question 4.                                                                             

A product line averages 5% scrap and 8% rework, with 40 pieces inspected per day. Establish daily control limits for this product which combine scrap and rework with respective (demerit) weights of 8 and 3.

UCL = ___________       LCL = __________

Question 5.                                                                             

For question #4, above: On a particular day 2 scrap and 7 rework are produced. What number would be plotted on the control chart and would this day be in or out of control?

Number plotted ______          In control ___________         out of control ___________

Solution