The difference of the sample means of two populations is 34.6, and the standard deviation of...
The difference of the sample means of two populations is 34.6, and the standard deviation of the difference of the sample means is 11.9.
The 95% confidence interval lies between (-11.9 -23.8 -35.7 -45.4) and (+11.9 +23.8 +35.7 +45.4)
The options are in the parentheses.
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The difference of the sample means of two populations is 34.6,
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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....
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