TABLE 12-16
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 Table 12-16, the p-value of the test is somewhere between 5% and 10%.

Question

Quizplus · Accepted Answer

The calculated test statistic for this hypothesis test is 2.576, which corresponds to a p-value of 0.009 (between 0.005 and 0.01 in Table 12-16). Therefore, the correct answer is A, the p-value is somewhere between 5% and 10%.

TABLE 12-16 A Filling Machine at a Local Soft Drinks Company Is