A psychologist suspects that heroin addicts have a different assessment of self-worth than others in the general populat

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A psychologist suspects that heroin addicts have a differentassessment of self-worth than others in the general population. Ona test designed to measure self-worth, the mean for the generalpopulation is 48.6. The psychologist obtains a random sample of 40test scores produced by heroin addicts and found the sample meanand the sample standard deviations are 45.5 and 8.5, respectively.a) Do these data indicate the self-worth of heroin addicts is lessthan that of the general population? Test at a .05 level ofsignificance. b) With 95% confidence, estimate the mean test scorefor the heroin addicts.
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