A manufacturer of salad dressings uses machines to dispense liquid ingredients into bottles that move along a filling line. The machine that dispenses salad dressings is working properly when 8 ounces are dispensed. Suppose that the average amount dispensed in a particular sample of 35 bottles is 7.91 ounces with a variance of 0.03 ounces squared.

The lost production from a shutdown is potentially so great that management feels that the level of significance in the analysis should be 99%.

Calculate Critical Values

Calculate sample parameters and the test statistic