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(Solved): In a random sample of 87 textbooks, the mean cost was $49.31. If the population standard deviation i ...



In a random sample of 87 textbooks, the mean cost was $49.31. If the population standard deviation is $16.14, what is the LOWER endpoint of a 95% confidence interval for the population mean?



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Given n=87 x?=$49.31 s
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