$1.$ a$)$ Define quality.

b$)$ Which role is responsible for making quality products?

c$)$ What is the role of the quality engineer in the process of making quality products?

$(15$ pts$)$

$2.$ Excel sheet first tab. A company's monthly quality cost study is as shown. What $\backslash (\backslash \%\backslash )$ of costs come from each of the four areas of quality costs? What sort of actions should this company take to improve? $(15$ pts $)$

$3.$ Excel sheet second tab. A project for improving the whiteness of a PVC resin produced two sets of data one taken before and the other taken after the improvement project. The whiteness numbers came from samples taken from bags of PVC at the end of the line. Compute the average, median, and standard deviation of each data set. Has the whiteness really improved in the new process? Back up your claim with an appropriate statistical analysis. $($Data based on report by Guyer and Lalwani $1994.)(15$ pts$)$