Question

question 3 (4*5 points) a team of researchers is testing the effectiveness of a new flu vaccine. they randomly divide the subjects into two groups. group 1 receives existing flu vaccine, and group 2 receives new flu vaccine. the patients were told which group they were in. which is the treatment group? group 1 group 2 neither group which is the control group (if there is one)? group 1 group 2 no control group is this study blind, double blind, or neither? blind double - blind neither which best describes this research? survey placebo controlled experiment controlled experiment experiment

Explanation:

1. In an experiment to test a new treatment, the group receiving the new treatment (new flu - vaccine here) is the treatment group. So Group 2 is the treatment group.
2. The control group is the group that receives the existing, standard treatment (existing flu - vaccine), which is Group 1.
3. Since the patients were told which group they were in, it is neither a blind nor a double - blind study. In blind and double - blind studies, participants do not know which group they belong to.
4. This is a controlled experiment as there is a control group (Group 1) and a treatment group (Group 2) to compare the effectiveness of the new flu vaccine. It is not a placebo - controlled experiment as there is no placebo involved, and it is not just a survey as it involves an intervention (vaccine administration).

Answer:

1. Group 2
2. Group 1
3. Neither
4. Controlled Experiment