***Need B, C, & D only*** You may need to use the appropriate appendix table or technology to answer this question. Consider the following data for two independent random samples taken from two normal populations. Sample 1 10 7 13 7 9 8 Sample 2 8 7 8 4 6 9 (a) Compute the two sample means. Sample 1 Sample 2  (b) Compute the two sample standard deviations. (Round your answers to two decimal places.) Sample 1 Sample 2  (c) What is the point estimate of the difference between the two population means? (Use Sample 1 − Sample 2.)   (d) What is the 90% confidence interval estimate of the difference between the two population means? (Use Sample 1 − Sample 2. Round your answers to two decimal places.)

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