Description
Question 1 1 / 1 pts
1. Which best describes Quality?
Question 2 1 / 1 pts
2. Which is not a dimension of product quality?
Question 3 1 / 1 pts
3. Statistical Process Control looks at variation as being of two types: Random and Assignable?
Question 4 1 / 1 pts
4. Which is not one of the four costs of quality?
Use the following for Questions 5-7. Assume 3 sigma limits:
John Doe works at Precision Brakes, a supplier to Honda. A critical dimension is the rotor diameter. John has taken 10 rotors per day for the past 5 days and measured them. The data from his samples are given in the table below:
Day Mean (mm) Range (mm)
1 156.9 4.2
2 153.2 4.6
3 153.6 4.1
4 155.5 5.0
5 156.6 4.5
Question 5 1 / 1 pts
Question 6 1 / 1 pts
6. What are the upper and lower control limits for the x-bar chart?
Question 7 1 / 1 pts
7. Is this process in control?
Use the following for Questions 8-9:
Whole Food Inc. uses SPC to ensure its protein bars have the proper weight. Based on an in control process using 3 sigma limits, the control limits were found to be UCLr = 1.14, LCLr=0, UCLx=6.56, LCLx=5.84. Over the last 5 days, the following additional samples have been taken:
Weight
Sample Bar #1 Bar #2 Bar #3 Bar #4
1 6.3 6.0 5.9 5.8
2 6.0 6.0 6.3 5.8
3 6.3 5.1 6.1 5.9
4 6.3 6.6 6.2 5.9
5 6.5 6.0 6.5 6.9
Question 8 1 / 1 pts
8. Is this Process Still in Control?
Question 9 1 / 1 pts
9. A similar extra-large product has a manufacturing process that creates snack bars with a process mean of 18 ounces and standard deviation of 2.5 ounces. According to Cpk is this process capable of meeting an 17.5 ounce +-2.5 requirement?
Question 10 1 / 1 pts
10. Mustek makes DRAM memory chips. The process yields products with an average life of 1,800 hours with a standard deviation of 100 hours. The requirement from IBM, Dell and others is 2,400 hours +- 1,800 hours. Using Cpk is this process capable of meeting the requirement from IBM, Dell and others?
Quiz Score: 10 out of 10
