Suppose you want to test whether running on a treadmill increases how energetic Psyc 2030Z students feel immediately after. You also want to determine whether being a habitual runner affects how energetic they feel, so you recruit Psych 2030Z students who are either not habitual runners or who habitually run at least 3 hrs/week. Of these chosen 2030Z students, you randomly assign them to one of four treadmill running times: 0, 10, 20 or 30 mins.

2A) How many different conditions are in the study?
2B) What would the control group/condition be?
2C) What is the name given to this type of design?
2D) Must subjects be randomly assigned to the different conditions? Briefly explain

2E) Can one infer a cause-and-effect relationship in this study? Briefly explain.