Question

a team of researchers is testing the effectiveness of a new hpv vaccine. they randomly divide the subjects into two groups. group 1 receives existing hpv vaccine, and group 2 receives new hpv vaccine. neither the patients or the doctors examining them knew 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 experiment placebo controlled experiment controlled experiment

Explanation:

• Treatment group: The group that receives the new treatment (new HPV vaccine). Group 2 receives the new HPV vaccine, so it is the treatment group.
• Control group: The group that receives the existing (standard) treatment. Group 1 receives the existing HPV vaccine, so it is the control group.
• Blind/double - blind: In a double - blind study, neither the participants (patients) nor the experimenters (doctors examining them) know which group (treatment or control) the participants are in. Since neither patients nor doctors knew the group assignments, this is a double - blind study.
• Type of research: An experiment is a study where the researcher manipulates a variable (here, the type of HPV vaccine). A controlled experiment has a control group (Group 1 with existing vaccine) and a treatment group (Group 2 with new vaccine). A placebo - controlled experiment would have a group receiving a placebo (inactive substance), but here both groups receive a vaccine (existing or new). A survey is just about collecting data through questions, which is not the case here.

Answer:

• Treatment group: Group 2
• Control group: Group 1
• Blind/double - blind: Double - blind
• Type of research: Controlled Experiment