1. Independent variables? 2. Dependent variable? 3. Explain the design. 4. Experimental hypotheses in symbols? 5. Which statistical analysis should be used and why? 6. Statistical statements? Which...

Extracted text: 1. Independent variables? 2. Dependent variable? 3. Explain the design. 4. Experimental hypotheses in symbols? 5. Which statistical analysis should be used and why? 6. Statistical statements? Which are significant?


Extracted text: A. A professor in physical education conducts an experiment to compare the effects on nighttime sleep of different amounts of exercise and the time of day when the exercise is done. There are three levels of exercise (light, moderate, and heavy) and two times of day (morning and evening). Thirty-six college students who are in good physical condition are randomly assigned to the six cells such that there are 6 subjects per cell. The subjects who do heavy exercise jog 9 miles, the subjects who do moderate exercise jog 6 miles, and the subjects in the light exercise condition jog for only 3 miles. Each subject engages in one exercise level and one time of day, and the number of hours slept that night is recorded. The following data are obtained: Exercise Time of Day Light Moderate Heavy Morning 6.5 7.4 7.4 7.3 8.0 7.6 7.3 6.6 7.2 6.8 6.8 6.7 7.6 7.4 7.7 6.6 7.1 7.2 Evening 7.1 7.9 8.2 7.7 7.4 8.0 8.2 8.7 7.5 7.6 8.1 8.5 9.6 9.5 9.4 7.6 8.2 8.0 192 ONCO N- 00