Consider an experiment to determine the effects of alcohol and of marijuana on driving. Five randomly selected subjects are given alcohol to produce legal drunkenness and then are given a simulated driving test (scored from a top score of 10 to a bottom score of 0). Five different randomly selected subjects are given marijuana and then the same driving test. Finally, a control group of five subjects is tested for driving while sober. Given the following driving test scores, test for the significance of differences among means of the following groups:

  • CreatedOctober 29, 2015
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