14.78 To help ensure that packages contain at least the stated weight of 12 ounces, a cereal manufacturer wants the filling machine set to 12.5 ounces. For a random sample of boxes, the weights (in ounces) are listed in file XR14078. At the 0.10 level of significance, does the filling machine seem to have “drifted” from the desired setting? Identify and interpret the p-value for the test.