to test the effects of alcohol Errors were recorded in a test of visual and...
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to test the effects of alcohol Errors were recorded in a test of visual and motor skills for a treatment group of 28 people who drank ethanol and another gro of 28 people given a placebo The errors for the treatment group have a standard deviation of 2 30 and the errors for the placebo group have a standard deviation of 0 72 Assume that the two populations are normally distributed Use a 0 05 significance level to test the claim that both groups have the same amount of variation among the errors I Let sample 1 be the sample with the larger sample variance and let sample 2 be the sample with the smaller sample variance What are the null and alternative hypotheses OA Ho o 02 H 0 0 OB Ho 0 02 H 0 0 OC Ho o 02 H 0 0 2 OD Ho 0 02 H 0 0
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