Get answer: Hypothesis Tests of Claims About Variation. In Exercises 716, test the given

Chapter 9, Problem 9

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Hypothesis Tests of Claims About Variation. In Exercises 716, test the given claim. Assume that both samples are independent simple random samples from populations having normal distributionsTesting Effects of Alcohol Researchers conducted an experiment to test the effects of alcohol. The errors were recorded in a test of visual andmotor skills for a treatment group of 22 people who drank ethanol and another group of 22 people given a placebo. The errors for the treatment grouphave a standard deviation of 2.20, and the errors for the placebo group have a standard deviation of 0.72 (based on data from Effects of AlcoholIntoxication on Risk Taking, Strategy, and Error Rate in Visuomotor Performance, by Streufert, et al., Journal of Applied Psychology, Vol. 77, No. 4).Use a 0.05 significance level to test the claim that the treatment group has errors that vary more than the errors of the placebo group