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a manufacture wishes to determine the list price for a smoke alarm. a survey of the list price is similar ones sold by 9 other

a manufacture wishes to determine the list price for a smoke alarm. a survey of the list price is similar ones sold by 9 other competing companies showed an average list price of $10.95 with a standard deviation s= $1.49. Find a 95% confidence interval for the average list price for a smoke alarm

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