Testing Claims About Variation. In Exercises 516, test the given claim. Identify the null hypothesis, alternative hypothesis, test statistic, Pvalue or critical value(s), conclusion about the null hypothesis, and final conclusion that addresses the original claim. Assume that a simple random sample is selected from a normally distributed population.Aircraft Altimeters The Skytek Avionics company uses a new production method to manufacture aircraft altimeters. A simple random sample ofnew altimeters resulted in the errors listed below. Use a 0.05 level of significance to test the claim that the new production method has errors with astandard deviation greater than 32.2 ft, which was the standarddeviation for the old production method. If it appears that the standard deviation is greater, does the new production method appear to be better orworse than the old method? Should the company take any action? 42 78 22 72 45 15 17 51 5 53 9 109

Chapter 3 Averages and Variation Material Extracted From Textbook (Brase, Charles Henry., and Corrinne Pellillo. Brase. Understandable Statistics: Concepts and Methods . 11th ed. N.p.: Cengage Learning, n.d. Print.) 3.1 Measures of Central Tendency: Mode, Median, and Mean Mode: The value that occurs most frequently. Note: if the data set has not single value that occurs...