6.222

You may need to use the appropriate appendix table or technology to answer this question. Consider the following da a for two independent random samples taken from two normal populations. Samplel 10 7 13 7 9 8 Samplez 8 7 9 4 5 9 (a) Compute the two sample means. Ev (b) Compute the two sample standard deviations. (Round your answers to two decimal places.) 5...... x sampez x (c) What is the point estimate of the difference between the two population means? (Use Sample 1 Sample 2.) _ (cl) 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.) x tox