Midterm 2 Practice Questions ACTUAL UPDATED QUESTIONS AND CORRECT ANSWERS

Midterm 2 Practice Questions ACTUAL UPDATED QUESTIONS AND CORRECT
ANSWERS

A jar-filling process has a lower specification limit of 9.5 a. 0.17
oz and an upper specification of 10.5 oz. The standard
deviation is 0.5 oz and the mean is 10 oz. Which value
comes closest to the standard deviation required in this
process to achieve a ppm of 5000?
a. 0.17
b. 0.20
c. 0.32
d. 0.24


C&A Industries is making steel rods with an average c. 31.73%
diameter of 2 mm. The process has a standard deviation
of 0.2 mm. The upper and lower specification limits are
2.2 mm and 1.8 mm respectively. What is the probability
that the rod's diameter will either be too wide or too
narrow? Choose the closest answer.
a. 84.13%
b. 68.27%
c. 31.73%
d. 15.87%