A researcher is interested in hamster wheel-running activity during the summer versus the winter. She suspects that either the hamsters will run less during the winter to conserve energy or they will run more to keep warm. She records the activity of n = 16 hamsters during June, July, and August and compares their running-wheel revolutions per hour to the activity of the same hamsters during December, January, and February. The data are collected, and the results show an average difference score of MDD = 6.2 and a sum of squares of SS = 984.15. What is the value for degrees of freedom for this repeated-measures t test? 50 47 15 16 What is the sample standard deviation (s) for the D scores? 2.03 984.15 65.61 8.1 What is the estimated standard error of the mean difference (sMDMD) for this study? 0.37 2.03 1.42 4.10
A researcher is interested in hamster wheel-running activity during the summer versus the winter. She suspects that either the hamsters will run less during the winter to conserve energy or they will run more to keep warm. She records the activity of n = 16 hamsters during June, July, and August and compares their running-wheel revolutions per hour to the activity of the same hamsters during December, January, and February. The data are collected, and the results show an average difference score of MDD = 6.2 and a sum of squares of SS = 984.15. What is the value for degrees of freedom for this repeated-measures t test? 50 47 15 16 What is the sample standard deviation (s) for the D scores? 2.03 984.15 65.61 8.1 What is the estimated standard error of the mean difference (sMDMD) for this study? 0.37 2.03 1.42 4.10
Chapter4: Linear Functions
Section: Chapter Questions
Problem 30PT: For the following exercises, use Table 4 which shows the percent of unemployed persons 25 years or...
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A researcher is interested in hamster wheel-running activity during the summer versus the winter. She suspects that either the hamsters will run less during the winter to conserve energy or they will run more to keep warm. She records the activity of n = 16 hamsters during June, July, and August and compares their running-wheel revolutions per hour to the activity of the same hamsters during December, January, and February.
The data are collected, and the results show an average difference score of MDD = 6.2 and a sum of squares of SS = 984.15.
What is the value for degrees of freedom for this repeated-measures t test?
50
47
15
16
What is the sample standard deviation (s) for the D scores?
2.03
984.15
65.61
8.1
What is the estimated standard error of the mean difference (sMDMD) for this study?
0.37
2.03
1.42
4.10
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