SCENARIO 12-21
a Filling Machine at a Local Soft Drinks $\chi ^ { 2 }$

question 95

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 12-21, which is the appropriate test to use?

• A) \(\chi ^ { 2 }\) -test of independence
• B) Kruskal-Wallis rank test
• C) Wilcoxon rank sum test
• D) \(\chi ^ { 2 }\) -test of population variance

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