Under which one of the following conditions should you avoid using hydrotherapy equipment?
a. you are overweight or obese.
b. you do not know how to swim.
c. you don t have previous experience using the equipment.
d. you have a heart condition.

Does the weight loss program have practical significance? a. no, the program is not practically significant because the results are likely to occur even if the weight loss program has no effect. b. yes, the program is practically significant because the results are too unlikely to occur by chance. c. yes, the program is practically significant because the amount of lost weight is large enough to be considered practically significant. d. no, the program is not practically significant because the amount of weight lost is trivial.