Question: An aircraft manufacturer is attempting to determine the average leg length of an adult male. A sample of 81 men was selected and the sample average leg length was found to be 45.5 inches and the sample standard deviation to be 5.5 inches. The manufacturer designs aircraft for adults with a leg length variance of 40 inches² or less. Using the sample results, test the null hypothesis that leg length variance is 40 inches² or less at a 5% level of significance. Be sure to state the test statistic, the p-value and the test result.