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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 a t- distribution. : 4 6. 8 10 12 14 16 18 BM Gain Figure 1 Does light at night affect body mass gain? Find a 99% confidence interval for the difference in mean weight gain H – Hp, where H, represents the mean weight gain of the mice in light and µp represents the mean weight gain of the mice in darkness. - Round your answers to two decimal places. The 99% confidence interval is i to i Light/Dark

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 a t- distribution. : 4 6. 8 10 12 14 16 18 BM Gain Figure 1 Does light at night affect body mass gain? Find a 99% confidence interval for the difference in mean weight gain H – Hp, where H, represents the mean weight gain of the mice in light and µp represents the mean weight gain of the mice in darkness. - Round your answers to two decimal places. The 99% confidence interval is i to i Light/Dark

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
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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 a t- distribution. : 4 8 10 12 14 16 18 BM Gain Figure 1 Does light at night affect body mass gain? Find a 99% confidence interval for the difference in mean weight gain µ, – µp, where uz represents the mean weight gain of the mice in light and µp represents the mean weight gain of the mice in darkness. Round your answers to two decimal places. The 99% confidence interval is i to i
Transcribed Image Text: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 a t- distribution. : 4 8 10 12 14 16 18 BM Gain Figure 1 Does light at night affect body mass gain? Find a 99% confidence interval for the difference in mean weight gain µ, – µp, where uz represents the mean weight gain of the mice in light and µp represents the mean weight gain of the mice in darkness. Round your answers to two decimal places. The 99% confidence interval is i to i
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