An aircraft manufacturer is concerned about variability in the diameters of lids used to seal fuel tanks. Only a narrow range of diameters is acceptable. A sample of 20 fuel-tank lids is taken. After measuring the 20 diameters, an engineer finds them to have a standard deviation of 0.095 inches. Conduct a test at a 2% level of significance to see whether the population variation of lid diameters equals 0.0001 inches squared, as specified by engineers.