SCENARIO 12-21 A Filling Machine at a Local Soft Drinks Company Is

Multiple Choice

SCENARIO 12-21
A filling machine at a local soft drinks company is calibrated to fill the cans at a mean amount of 12
fluid ounces and a standard deviation of 0.5 ounces. The company wants to test whether the standard
deviation of the amount filled by the machine is 0.5 ounces. A random sample of 15 cans filled by
the machine reveals a standard deviation of 0.67 ounces.
-Referring to Scenario 12-19, what type of test should be performed?

A) Lower-tail test
B) Upper-tail test
C) Two-tail test
D) None of the above