Ahealth club wants to survey its members about new services to offer. which of the following groups would provide the best representative sample?
women in a yoga class
parents at the club's daycare
every 5th member entering the club
members of two weightlifting classes

Describe some of the common health conditions associated with air pollution.

The cardiovascular system, which transports blood through the body, is a one-way system. select the best answer from the choices provided. t f

In a study of a weight loss program, 40 subjects lost a mean of 3.0 lb after 12 months. does the weight loss program have practical significance? a. yes, because the weight loss program worked and the subjects lost a mean of 3.0 lb. b. no, because the mean weight loss of 3.0 lb after one year does not seem to justify the program. c. no, because the sample of 40 subjects was too small to determine if the program was useful. d. yes, because the mean weight loss of 3.0 lb after one year does seems to justify the program.