Herbal medicines survey. Refer to The American Association of Nurse Anesthetists Journal (Feb. 2000) study on the use of herbal medicines before surgery, Recall that 51% of surgical patients use herbal medicines against their doctor’s advice prior to surgery.
a. What is the probability that a randomly selected surgical patient will use herbal medicines against his or her doctor’s advice?
b. What is the probability that in a sample of two independently selected surgical patients, both will use herbal medicines against their doctor’s advice?
c. What is the probability that in a sample of five independently selected surgical patients, all five will use herbal medicines against their doctor’s advice?
d. Would you expect the event in part c to occur? Explain.
Herbal medicines. The American Association of Nurse Anesthetists Journal (Feb. 2000) published the results of a study on the use of herbal medicines before surgery. Of 500 surgical patients randomly selected for the study, 51% used herbal or alternative medicines (e.g., garlic, ginkgo, kava, fish oil) against their doctor’s advice prior to surgery.
a. Do the 500 surgical patients represent a population or a sample? Explain.
b. If your answer was “sample” in part a, is the sample representative of the population? If you answered “pop- ulation” in part a, explain how to obtain a representative sample from the population.
c. For each patient, what variable is measured? Are the data collected quantitative or qualitative?
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