Assignment:
Question
A production filling operation has a historical standard deviation of 6 ounces. When in proper adjustment, the mean filling weight for the production process is 47 ounces. A quality control inspector periodically selects at random 36 containers and uses the sample mean filling weight to see if the process is in proper adjustment. Using a standardized test statistic, test the hypothesis at the 5% level of significance if the samples mean filling weight is 48.6 ounces.