Given two dependent random samples with the following results: Population 1 29 32 Population 2 23 46 42 43 23 30 21 44 48 35 21 18 Use this data to find the 90% confidence interval for the true difference between the population means. Let d = (Population 1 entry)-(Population 2 entry). Assume that both populations are normally distributed. Cop Step 2 of 4: Find the critical value that should be used in constructing the confidence interval. Round your answer to three decimal places.

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