Solved: Testing Claims about Variation. In Exercises 516,
Chapter 8, Problem 15(choose chapter or problem)
Testing Claims about Variation. In Exercises 516, test the given claim. Identifythe null hypothesis, alternative hypothesis, test statistic, P-value or critical value(s),conclusion about the null hypothesis, and final conclusion that addresses the originalclaim. Assume that a simple random sample is selected from a normally distributedpopulation. Aircraft Altimeters The Skytek Avionics company uses a new production method tomanufacture aircraft altimeters. A simple random sample of new altimeters resulted in theerrors listed below. Use a 0.05 level of significance to test the claim that the new productionmethod has errors with a standard deviation greater than 32.2 ft, which was the standard deviation for the old production method. If it appears that the standard deviation is greater,does the new production method appear to be better or worse than the old method? Shouldthe company take any action?-42 78 -22 -72 -45 15 17 51 -5 -53 -9 -109
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