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Mathematics 16 Online
OpenStudy (anonymous):

The average price of a sample of 12 bottles of diet salad dressing taken from different stores is $1.43 with the standard deviation is $0.09. The average price of a sample of 16 low-calorie frozen desserts is $1.03 with the standard deviation is $0.10. Find the 99% confidence interval of the difference in the means

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