Claim: d 0; = 0.10. Sample statistics: d = -1, s d = 2.75,

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Claim: μd ≠ 0; α = 0.10. Sample statistics: d̅ = -1, sd = 2.75, n = 20

Test the claim about the mean of the differences for a population of paired data at the level of significance α. Assume the samples are random and dependent, and the populations are normally distributed.

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