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A test of sobriety involves measuring the subject's motor skills . Twenty randomly selected sober subjects produced a mean score of 41 with a known
A test of sobriety involves measuring the subject's motor skills . Twenty randomly selected sober subjects produced a mean score of 41 with a known population standard deviation of 3.7. At the .01 level of significance test the claim the true mean score for all sober subjects is equal to 35 . Use the .05 level and the z .
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