TABLE 12-14 A Filling Machine at a Local Soft Drinks Company Is

Multiple Choice

TABLE 12-14
A filling machine at a local soft drinks company is calibrated to fill the cans at an average 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 indeed 0.5 ounces. A random sample of 15 cans filled by the machine reveals a standard deviation of 0.67 ounces.
-Referring to Table 12-14, which is the appropriate test to use?

A) ?²-test of population variance
B) Wilcoxon rank sum test
C) Wilcoxon signed ranks test
D) ?²-test of independence