# The following results are for independent random samples taken from two populations. Sample 1 Sample 2 n 1 = 20 n 2 = 30 x ¯ 1 = 2 2.5 x ¯ 2 = 2 0. 1 s 1 = 2.5 s 2 = 4.8 a. What is the point estimate of the difference between the two population means? b. What is the degrees of freedom for the t distribution? c. At 95% confidence, what is the margin of error? d. What is the 95% confidence interval for the difference between the two population means? BuyFind

### STATISTICS F/BUSINESS+ECONOMICS-TE...

13th Edition
Anderson
Publisher: CENGAGE L
ISBN: 9781305881884 BuyFind

### STATISTICS F/BUSINESS+ECONOMICS-TE...

13th Edition
Anderson
Publisher: CENGAGE L
ISBN: 9781305881884

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Chapter 10.2, Problem 9E
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