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, the p-value of the test is somewhere in between 5% and 10%.

Question

Quizplus · Accepted Answer

Looking at the row for 14 degrees of freedom (df), the calculated t-value is approximately 2.145. Using a two-tailed test, the p-value is between 0.05 and 0.10. Therefore, the statement is true.

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