1. The following results come from two independent random samples taken of two populations. Sample 1 n₁ = 50 ₁ = 13.6 01 = 2.2 Sample 2 n2 = 35 T2 = 11.6 02 = 3.0 a) What is the point estimate of the difference between the two population means? b) Provide a 90% confidence interval for the difference between the two population means. c) Provide a 95% confidence interval for the difference between the two population means.

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