Question

2. You and Dr. Exercise have decided to conduct a study on exercise and its effects on mood ratings. Many studies (Babyak et al., 2000; Blumenthal et al., 1999) have suggested that exercise does indeed improve overall mood ratings. In addition, exercise has been shown to reduce scores on the Beck Depression Inventory II (BDI-II). Below are the scores from a mood rating scale for 15 females. Participants were randomly assigned to 1 of 3 exercise conditions: 30 minutes, 60 minutes and 90 minutes. Participants participated in the exercise three times a week for a period of six months. After the conclusion of the exercise program, participants were instructed to rate their mood. The higher the score, the more evidence there is for depression. 90 Minutes 60 Minutes 30 Minutes 3 5 8 1 3 9 1 5 9 2 4 6 1 5 7 A. Looking at the two unplanned comparisons (from B and C) listed below, which type of unplanned comparison would be most appropriate? B. Do the appropriate unplanned comparison to determine whether those who exercise 90 minutes are less depressed than those who exercise 60 minutes using ?FW = .05. Be sure to state your hypotheses, state the decision rule, calculate the F ratio for the comparison, state the decision, and write your conclusion. Part C is a Problem for Further Practice C. Do the appropriate unplanned comparison to determine whether those who exercise 30 minutes are more depressed than other participants using ?FW = .05. Be sure to state your hypotheses, state the decision rule, calculate the F ratio for the comparison, state the decision, and write your conclusion.

2. You and Dr. Exercise have decided to conduct a study on exercise and its effects on mood ratings. Many studies (Babyak et al., 2000; Blumenthal et al., 1999) have suggested that exercise does indeed improve overall mood ratings. In addition, exercise has been shown to reduce scores on the Beck Depression Inventory II (BDI-II). Below are the scores from a mood rating scale for 15 females. Participants were randomly assigned to 1 of 3 exercise conditions: 30 minutes, 60 minutes and 90 minutes. Participants participated in the exercise three times a week for a period of six months. After the conclusion of the exercise program, participants were instructed to rate their mood. The higher the score, the more evidence there is for depression.
90 Minutes 60 Minutes 30 Minutes
3 5 8
1 3 9
1 5 9
2 4 6
1 5 7
A. Looking at the two unplanned comparisons (from B and C) listed below, which type of unplanned comparison would be most appropriate?
B. Do the appropriate unplanned comparison to determine whether those who exercise 90 minutes are less depressed than those who exercise 60 minutes using ?FW = .05. Be sure to state your hypotheses, state the decision rule, calculate the F ratio for the comparison, state the decision, and write your conclusion.
Part C is a Problem for Further Practice
C. Do the appropriate unplanned comparison to determine whether those who exercise 30 minutes are more depressed than other participants using ?FW = .05. Be sure to state your hypotheses, state the decision rule, calculate the F ratio for the comparison, state the decision, and write your conclusion.

Added by Sharon O.

Question

Please give Ace some feedback