Question: The Prescott County Department of Weights and Measures supervisor, Tony Tonn, is responsible for making sure that all commercial weighing and measuring devices are working properly. As part of this he must be sure that gas stations in Prescott County actually dispense one gallon for a gallon charged. Recently he came to one of Pete Petro’s Prescott Gasoline Company stations (you will remember from above). He filed 10 cans until the pump read 1.0 gallons, and then he measured precisely the amount of gasoline in each can. He found the following data:

Based on this data, at the .05 level of significance, did Pete Petro either cheat himself or his customers if the standard deviation allowable by law is 0.010 gallons per gallon of gas?

HINT: Again start with writing your hypotheses, and yes, this is a chi square test. Show your work and answer the question based on your analysis.