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Use the following data to construct a 99% confidence interval to estimate the difference D. Assume the differences are normally distributed in the population.

Use the following data to construct a 99% confidence interval to estimate the difference D. Assume the differences are normally distributed in the population. What is the lower value of the interval? (Round your answers to 2 decimal places, e.g. 1.75.) Respondent Before After 1 47 63 2 33 35 3 38 36 4 50 56 5 LO 39 44 11 6 27 29 7 35 32 8 46 54 41 47

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