You may need to use the appropriate appendix table or technology to answer this question. The following results come from two independent random samples taken of two populations. Sample 1 = 60 Sample 2 2-35 x 13.6 x 11.6 1-2.2 %-3 (a) What is the point estimate of the difference between the two population means? (Use x - x2.) (b) Provide a 90% confidence interval for the difference between the two population means. (Use x-x. Round your answers to two decimal places.) to (c) Provide a 95% confidence interval for the difference between the two population means. (Use x-x2. Round your answers to two decimal places.) to