Historically, the average proportion of defective bars has been 015. Samples will be of
100 bars each. Construct a p-chart using . Suppose a sample had 0.044
defectives. What would be the best action to take in this scenario?
a. Nothing; it appears to be random variation.
b. Look for assignable causes.
c. Change z to 2 and take another sample.
d. Change z to 4 and continue sampling.
Answer:
A quality characteristic has a specification (in cm) of 0.40 ± 03. If the value of the
quality characteristic exceeds 0.40 by the tolerance of 0.030 on either side, the product
will require a $180.00 repair. What is the appropriate Taguchi loss function?
a. L(x) = 200,000 (0.43 − 37)2
b. L(x) = 2,000 (0.43 − 37)2
c. L(x) = 200 (0.43 − 37)2
d. L(x) = 200,000 (x − 40)2
Answer: