1. Two cooling fans are installed in some laptop computers. Suppose the reliability of each cooling fan is 0.9. What percent improvement in reliability does adding the second fan provide?
2. Why are two control charts not necessary in controlling for attributes? might not the variability of the fraction defective or the number of defects also be going out of control.
3. Identity three things you would most likely to find out if you were an “ Undercover Boss “ and Why?