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# In order to compare the means of two populations, independent random samples of 395 observations are...

## Question

###### In order to compare the means of two populations, independent random samples of 395 observations are...

In order to compare the means of two populations, independent random samples of 395 observations are selected from each population, with the results found in the table to the right. Complete parts a through e below. Sample 2 x2 = 5,250 2-210 Sample 1 X,5,279 1-140 a. Use a 95% confidence interval to estimate the difference between the population means (μ1-μ2) . Interpret the confidence The confidence interval is Round to one decimal place as needed.) Interpret the confidence interval. Select the correct answer below. A. We are 95% confident that each of the population means is contained in the confidence interval B. ° C. 0 D. We are 95% confident that the difference between the population means falls outside of the confidence interval. We are 95% confident that the difference between the population means falls in the confidence interval. We are 95% confident that each of the population means falls outside of the confidence interval. b. Test the null hypothesis Ho: (버-u2)-0 versus the alternative hypothesis Hai (버-u2) 40, Give the significance level of the test, and interpret the result. Use α=0.05. What is the test statistic?

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