Carlos is analyzing the results of an experiment on two groups of mice in which he compared the difference in their weight gain after feeding each group a different type of food for one month. The difference in the mean weight gain is 0.6 grams. The standard deviation of the difference in sample means is 0.305.

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Selena Medina

Mathematics

21 January, 23:08

Carlos is analyzing the results of an experiment on two groups of mice in which he compared the difference in their weight gain after feeding each group a different type of food for one month. The difference in the mean weight gain is 0.6 grams. The standard deviation of the difference in sample means is 0.305.

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Bronson Pierce · Answer 1

Given:difference in the mean weight gain is 0.60 gramsstandard deviation of the difference in sample mean is 0.305

68% confidence interval for the population mean difference is a) 0.305

0.60 + 1 * 0.3050.60 + 0.305 = 0.9050.60 - 0.305 = 0.295

95% confidence interval for the population mean difference is c) 0.61

0.60 + 2 * 0.3050.60 + 0.61 = 1.210.60 - 0.61 = - 0.01