A bottling company produces bottles that hold 8 ounces of liquid. Periodically, the company gets complaints that their bottles are not holding enough liquid. To test this claim, the bottling company...

A bottling company produces bottles that hold 8 ounces of liquid. Periodically, the company gets complaints that their bottles are not holding enough liquid. To test this claim, the bottling company randomly samples 16 bottles and finds the average amount of liquid held by the bottles is 7.7 ounces with a standard deviation of 0.4 ounce. Calculate the appropriate test statistic.