Consider the following results for two independent random samples taken from two populations. Sample 1 Sample 2 n1 = 50 n2 = 35 x?1 = 13.3 x?2 = 11.3 ?1 = 2.2 ?2 = 3.4 a. What is the point estimate of the difference between the two population means? (to 1 decimal) b. Provide a 90% confidence interval for the difference between the two population means (to 2 decimals). Use z-table. c. Provide a 95% confidence interval for the difference between the two population means (to 2 decimals). Use z-table. If your answer is negative, enter minus (-) sign.
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Calculate the sample means and sample standard deviations for both samples. Sample 1: 13.3 Sample 2: 11.3, 3.44 Mean of Sample 1: $\bar{x}_1 = 13.3$ Mean of Sample 2: $\bar{x}_2 = \frac{11.3 + 3.44}{2} = 7.37$ Show more…
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