Light at Night and Weight Gain A study found that mice exposed to light at night gained substantially more weight than mice who had complete darkness at night, despite the fact that calorie intake and activity levels were the same for the two groups. How large is the effect of light on weight gain? In the study, 27 mice were randomly divided into two groups. The 8 mice with darkness at night gained an average of 5.9 grams in body mass, with a standard deviation of 1.9 grams. The 19 mice with light at night gained an average of 9.4 grams with a standard deviation of 3.2 grams. We see in Figure 1 that there is no extreme skewness or extreme outliers, so it is appropriate to use at-distribution. 6 8 10 12 14 16 18 BM Gain Figure 1 Does light at night affect body mass gain? Find a 90% confidence interval for the difference in mean weight gain u – Hp.where u2 represents the mean weight gain of the mice in light and 4 represents the mean weight gain of the mice in darkness. Round your answers to two decimal places. The 90% confidence interval is to

Light at Night and Weight Gain A study found that mice exposed to light at night gained substantially more weight than mice who had complete darkness at night, despite the fact that calorie intake and activity levels were the same for the two groups. How large is the effect of light on weight gain? In the study, 27 mice were randomly divided into two groups. The 8 mice with darkness at night gained an average of 5.9 grams in body mass, with a standard deviation of 1.9 grams. The 19 mice with light at night gained an average of 9.4 grams with a standard deviation of 3.2 grams. We see in Figure 1 that there is no extreme skewness or extreme outliers, so it is appropriate to use at-distribution. 6 8 10 12 14 16 18 BM Gain Figure 1 Does light at night affect body mass gain? Find a 90% confidence interval for the difference in mean weight gain u – Hp.where u2 represents the mean weight gain of the mice in light and 4 represents the mean weight gain of the mice in darkness. Round your answers to two decimal places. The 90% confidence interval is to

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Description: Light at Night and Weight GainA study found that mice exposed to light at night gained substantially more weight than mice who hadcomplete darkness at night, despite the fact that calorie intake and activity levels were the same for the twogroups. H

Holt Mcdougal Larson Pre-algebra: Student Edition 2012

1st Edition

ISBN:9780547587776

Author:HOLT MCDOUGAL

Publisher:HOLT MCDOUGAL

Chapter11: Data Analysis And Probability

Section: Chapter Questions

Problem 8CR

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