A psychologist is studying the self Image of smokers, as measured by the self-image (SI) score from a personality Invent

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A Psychologist Is Studying The Self Image Of Smokers As Measured By The Self Image Si Score From A Personality Invent 1 (34.9 KiB) Viewed 51 times

A psychologist is studying the self Image of smokers, as measured by the self-image (SI) score from a personality Inventory. She would like to examine the mean St score, 1, for the population of all smokers. Previously published studies have Indicated that the mean St score for the population of all smokers is 85 and that the standard deviation is 10, but the psychologist has good reason to believe that the value for the mean has changed. She plans to perform a statistical test. She takes a random sample of St scores for smokers and computes the sample mean to be 75. Based on this information, complete the parts below. (a) What are the null hypothesis and the alternative hypothesis that should be used for the test? u HU HD DO USD DD OOD ? (6) Suppose that the psychologlat decides to reject the null hypothesis. What sort of error might she be making? (Choose one) v (c) Fill in the blankes to describe the Type Terror that could occur if the true mean SI score for all smokers is 85. A Type Terror would be (Choose one) the hypothesis that is (Choose one) (Choose one) when, in fact, is (Choose one) V