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Given two independent random samples with the following results: n1 = 7 n2 = 12 X1 = 103 X2 = 82 $1 = 34 $2 = 15 Use this data to find the 90 % confidence interval for the true difference between the population means. Assume that the population variances are not equal and that the two populations are normally distributed. Copy Data Step 1 of 3: Find the point estimate that should be used in constructing the confidence interval