A school nurse decided to begin a don't smoke, don't start program. To determine if the program has any effect, an experimental trial study was planned. The nurse would
A. Break the students into two groups, smokers and nonsmokers, teach the course to both groups, and then observe for changes in beliefs.
B. Break the students into two randomly chosen groups, teach the program to all students, and then determine learning and smoking behaviors through a posttest.
C. Break the students into two randomly chosen groups, teach the program to one group, and then determine differences in knowledge and smoking behaviors between the two groups.
D. Screen each student and look for evidence of smoking behaviors.
Question 2
A school nurse was concerned about the amount of obesity in the elementary school classes. Based on the literature the nurse decided to ask each student if he or she ate breakfast before coming to school in the morning.
The nurse is doing a(n):
A. Analytic study.
B. Case-control study.
C. Correlational study.
D. Ex post facto study.
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