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8.36 Glucose Tolerance We have seen that light at night increases weight gain in mice and increases the percent of calories consumed when mice are normally sleeping. What effect does light at night have on glucose tolerance? After four weeks in the experimental light conditions, mice were given a glucose tolerance test (GTT). Glucose levels were measured 15 minutes and 120 minutes after an injection of glucose. In healthy mice, glucose lev- els are high at the 15-minute mark and then return to normal by the 120-minute mark. If a mouse is glucose intolerant, levels tend to stay high much longer. Computer output is shown giving the sum- mary statistics for both measurements under each of the three light conditions. Descriptive Statistics: GTT-15 Variable Light GTT-15 DM LD LL N 10 8 9 Mean 338.8 318.7 373.6 StDev 80.6 106.5 59.1

8.36 Glucose Tolerance We have seen that light at night increases weight gain in mice and increases the percent of calories consumed when mice are normally sleeping. What effect does light at night have on glucose tolerance? After four weeks in the experimental light conditions, mice were given a glucose tolerance test (GTT). Glucose levels were measured 15 minutes and 120 minutes after an injection of glucose. In healthy mice, glucose lev- els are high at the 15-minute mark and then return to normal by the 120-minute mark. If a mouse is glucose intolerant, levels tend to stay high much longer. Computer output is shown giving the sum- mary statistics for both measurements under each of the three light conditions. Descriptive Statistics: GTT-15 Variable Light GTT-15 DM LD LL N 10 8 9 Mean 338.8 318.7 373.6 StDev 80.6 106.5 59.1

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
Problem 1P
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Page 601 Descriptive Statistics: GTT-120 Variable GTT-120 Light DM LD LL 8.1 Analysis of Variance 601 of i N 10 8 9 Mean 258.7 173.5 321.4 StDev 113.0 41.9 109.0 (a) Why is it more appropriate to use a random- ization test to compare means for the GTT-120 data? (b) Describe how we might use the 27 data values in GTT-120 to create one randomization sample. A (c) Using a randomization test in both cases, we obtain a p-value of 0.402 for the GTT-15 data and a p-value of 0.015 for the GTT-120 data. Clearly state the results of the tests, using a 5% significance level. Does light at night appear to affect glucose intolerance? 8.37 Time Spent on Homework and School Pres- sure Exercise 1.24 introduces a survey given to a sample of high school seniors in Pennsylvania. Two of the variables in the survey are HWHours, the
Transcribed Image Text:Page 601 Descriptive Statistics: GTT-120 Variable GTT-120 Light DM LD LL 8.1 Analysis of Variance 601 of i N 10 8 9 Mean 258.7 173.5 321.4 StDev 113.0 41.9 109.0 (a) Why is it more appropriate to use a random- ization test to compare means for the GTT-120 data? (b) Describe how we might use the 27 data values in GTT-120 to create one randomization sample. A (c) Using a randomization test in both cases, we obtain a p-value of 0.402 for the GTT-15 data and a p-value of 0.015 for the GTT-120 data. Clearly state the results of the tests, using a 5% significance level. Does light at night appear to affect glucose intolerance? 8.37 Time Spent on Homework and School Pres- sure Exercise 1.24 introduces a survey given to a sample of high school seniors in Pennsylvania. Two of the variables in the survey are HWHours, the
( when food is consumed by mice? Justify your answer with a p-value. Can we conclude that there is a cause-and-effect relationship? 8.36 Glucose Tolerance We have seen that light at night increases weight gain in mice and increases the percent of calories consumed when mice are normally sleeping. What effect does light at night have on glucose tolerance? After four weeks in the experimental light conditions, mice were given a glucose tolerance test (GTT). Glucose levels were measured 15 minutes and 120 minutes after an injection of glucose. In healthy mice, glucose lev- els are high at the 15-minute mark and then return to normal by the 120-minute mark. If a mouse is glucose intolerant, levels tend to stay high much longer. Computer output is shown giving the sum- mary statistics for both measurements under each of the three light conditions. Descriptive Statistics: GTT-15 Variable Light GTT-15 DM LD LL N 10 8 9 Mean 338.8 318.7 373.6 StDev 80.6 106.5 59.1 ( 8- m to T nu ni WI da (a) (b) (c) 8.39 page relat hipp inclu 75% Page 601 of 839 Location 1
Transcribed Image Text:( when food is consumed by mice? Justify your answer with a p-value. Can we conclude that there is a cause-and-effect relationship? 8.36 Glucose Tolerance We have seen that light at night increases weight gain in mice and increases the percent of calories consumed when mice are normally sleeping. What effect does light at night have on glucose tolerance? After four weeks in the experimental light conditions, mice were given a glucose tolerance test (GTT). Glucose levels were measured 15 minutes and 120 minutes after an injection of glucose. In healthy mice, glucose lev- els are high at the 15-minute mark and then return to normal by the 120-minute mark. If a mouse is glucose intolerant, levels tend to stay high much longer. Computer output is shown giving the sum- mary statistics for both measurements under each of the three light conditions. Descriptive Statistics: GTT-15 Variable Light GTT-15 DM LD LL N 10 8 9 Mean 338.8 318.7 373.6 StDev 80.6 106.5 59.1 ( 8- m to T nu ni WI da (a) (b) (c) 8.39 page relat hipp inclu 75% Page 601 of 839 Location 1
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