19 2 pts Researches want to investigate the effects of video

#19 (2 pts)- Researches want to investigate the effects of video games on children?s body mass index (BMI). During the year children who come into the clinic for their yearly appointment are asked on average how many hours a week they play video games. During the same visit the child?s weight and height are taken to calculate the child?s BMI. This is an example of: Observational Study Experiment Matched Pairs #20 (2 pts)To determine the effectiveness of a new chicken pox vaccine vs. current vaccine researches create an experiment which divides the participants randomly into two groups. Group A is given the new vaccine and Group B is given the current vaccine. Both vaccines are given via a shot and look identical to one another. The researchers who are conducting the experiment and follow-up appointments do not know if the participants are in Group A or B. This is an example of: Non-Double Blinded Experiment Double Blinded Experiment Matched Pairs #21 (3 pts)-Using the information from #20, which group is the control group?

Solution

19 . Observational study

20. double blinded experiment

21 .group B is the control group