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 Sample 1 Sample 2 71-60 populations. 1-35 x=13.6 -11.6 01-2.5 02-3 (a) What is the point estimate of the difference between the two population means? (Use x-x2-) 21 (b) Provide a 90% confidence interval for the difference between the two population means. (Use x-x2. Round your answers to two decimal places.) x to 3.12 x (c) Provide a 95% confidence interval for the difference between the two population means. (Use x-x. Round your answers to two decimal places.) x to x