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8.61 More on Exercise and Stress Exercise 6.243 on page 499 introduces a study showing that exercise appears to offer some resiliency against stress, and Exercise 8.21 on page 597 follows up on this intro- duction. In the study, mice were randomly assigned to live in an enriched environment (EE), a stan- dard environment (SE), or an impoverished envi- ronment (IE) for several weeks. Only the enriched environment provided opportunities for exercise. Half the mice then remained in their home cage (HC) as control groups while half were subjected to stress (SD). The researchers were interested in how resilient the mice were in recovering from the stress. One measure of mouse anxiety is amount of time hiding in a dark compartment, with mice who are more anxious spending more time in darkness. The amount of time (in seconds) spent in darkness during one trial is recorded for all the mice and the means and the results of the ANOVA analysis are shown. There are eight mice in each of the six groups. Group: IE:HC SE:HC Mean: 192 196 Source Light Error Total SS 5 481776 42 177835 47 659611 DF EE:HC IE:SD SE:SD EE:SD 205 392 438 231 MS F 96355.2 39.0 2469.9 P 0.000 (a) Is there a difference between the groups in the amount of time spent in darkness? Between which two groups are we most likely to find a difference in mean time spent in darkness? Between which two groups are we least likely to find a difference? (b) By looking at the six means, where do you think the differences are likely to lie?

8.61 More on Exercise and Stress Exercise 6.243 on page 499 introduces a study showing that exercise appears to offer some resiliency against stress, and Exercise 8.21 on page 597 follows up on this intro- duction. In the study, mice were randomly assigned to live in an enriched environment (EE), a stan- dard environment (SE), or an impoverished envi- ronment (IE) for several weeks. Only the enriched environment provided opportunities for exercise. Half the mice then remained in their home cage (HC) as control groups while half were subjected to stress (SD). The researchers were interested in how resilient the mice were in recovering from the stress. One measure of mouse anxiety is amount of time hiding in a dark compartment, with mice who are more anxious spending more time in darkness. The amount of time (in seconds) spent in darkness during one trial is recorded for all the mice and the means and the results of the ANOVA analysis are shown. There are eight mice in each of the six groups. Group: IE:HC SE:HC Mean: 192 196 Source Light Error Total SS 5 481776 42 177835 47 659611 DF EE:HC IE:SD SE:SD EE:SD 205 392 438 231 MS F 96355.2 39.0 2469.9 P 0.000 (a) Is there a difference between the groups in the amount of time spent in darkness? Between which two groups are we most likely to find a difference in mean time spent in darkness? Between which two groups are we least likely to find a difference? (b) By looking at the six means, where do you think the differences are likely to lie?

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.3: Measures Of Spread
Problem 1GP
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atistics: Unlocking the Power of Data, 3rd Edition Page 611 of < > MICE, ng that ith nor- study, of three k cycle, ad dim n dark- ow that ht gain ses 8.59 ces. howing er four shown, Which t mean P 0.001 earchers seen in by when N 8.61 More on Exercise and Stress Exercise 6.243 on page 499 introduces a study showing that exercise appears to offer some resiliency against stress, and Exercise 8.21 on page 597 follows up on this intro- duction. In the study, mice were randomly assigned to live in an enriched environment (EE), a stan- dard environment (SE), or an impoverished envi- ronment (IE) for several weeks. Only the enriched environment provided opportunities for exercise. Half the mice then remained in their home cage (HC) as control groups while half were subjected to stress (SD). The researchers were interested in how resilient the mice were in recovering from the stress. One measure of mouse anxiety is amount of time hiding in a dark compartment, with mice who are more anxious spending more time in darkness. The amount of time (in seconds) spent in darkness during one trial is recorded for all the mice and the means and the results of the ANOVA analysis are shown. There are eight mice in each of the six groups. Group: IE:HC SE:HC Mean: 192 196 Source DF Light Error Total EE:HC IE:SD SE:SD 205 392 438 SS 5 481776 42 177835 2469.9 47 659611 MS F 96355.2 39.0 P 0.000 EE:SD 231 (a) Is there a difference between the groups in the amount of time spent in darkness? Between which two groups are we most likely to find a difference in mean time spent in darkness? Between which two groups are we least likely to find a difference? (b) By looking at the six means, where do you think the differences are likely to lie?
Transcribed Image Text:atistics: Unlocking the Power of Data, 3rd Edition Page 611 of < > MICE, ng that ith nor- study, of three k cycle, ad dim n dark- ow that ht gain ses 8.59 ces. howing er four shown, Which t mean P 0.001 earchers seen in by when N 8.61 More on Exercise and Stress Exercise 6.243 on page 499 introduces a study showing that exercise appears to offer some resiliency against stress, and Exercise 8.21 on page 597 follows up on this intro- duction. In the study, mice were randomly assigned to live in an enriched environment (EE), a stan- dard environment (SE), or an impoverished envi- ronment (IE) for several weeks. Only the enriched environment provided opportunities for exercise. Half the mice then remained in their home cage (HC) as control groups while half were subjected to stress (SD). The researchers were interested in how resilient the mice were in recovering from the stress. One measure of mouse anxiety is amount of time hiding in a dark compartment, with mice who are more anxious spending more time in darkness. The amount of time (in seconds) spent in darkness during one trial is recorded for all the mice and the means and the results of the ANOVA analysis are shown. There are eight mice in each of the six groups. Group: IE:HC SE:HC Mean: 192 196 Source DF Light Error Total EE:HC IE:SD SE:SD 205 392 438 SS 5 481776 42 177835 2469.9 47 659611 MS F 96355.2 39.0 P 0.000 EE:SD 231 (a) Is there a difference between the groups in the amount of time spent in darkness? Between which two groups are we most likely to find a difference in mean time spent in darkness? Between which two groups are we least likely to find a difference? (b) By looking at the six means, where do you think the differences are likely to lie?
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