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Test the claim that for the population of statistics final exams, the mean score is 72 using alternative hypothesis that the mean score is different from 72 . Sample statistics include $n=19,x?=73$, and $s=12$. Use a significance level of $?=0.01$. (Assume normally distributed population.) The test statistic is The positive critical value is The negative critical value is The conclusion is A. There is not sufficient evidence to reject the claim that the mean score is equal to 72 . B. There is sufficient evidence to reject the claim that the mean score is equal to 72.

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