# Question

Refer to Exercise 9.13. Suppose the new weight- loss agents were of the following form:

A1: Drug therapy with exercise and counseling

A2: Drug therapy with exercise but no counseling

A3: Drug therapy with counseling but no exercise

A4: Drug therapy with no exercise and no counseling

Construct contrasts to make comparisons among the agent means that will address the following:

a. Compare the mean for the standard agent to the average of the means for the four new agents.

b. Compare the mean for the agents with counseling to those without counseling. (Ignore the standard.)

c. Compare the mean for the agents with exercise to those without exercise. (Ignore the standard.)

d. Compare the mean for the agents with counseling to the standard.

A1: Drug therapy with exercise and counseling

A2: Drug therapy with exercise but no counseling

A3: Drug therapy with counseling but no exercise

A4: Drug therapy with no exercise and no counseling

Construct contrasts to make comparisons among the agent means that will address the following:

a. Compare the mean for the standard agent to the average of the means for the four new agents.

b. Compare the mean for the agents with counseling to those without counseling. (Ignore the standard.)

c. Compare the mean for the agents with exercise to those without exercise. (Ignore the standard.)

d. Compare the mean for the agents with counseling to the standard.

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