Answer Happy

Fifty people with severe headaches are randomly divided into two groups. One group is treated weekly with laughing sessions and an exercise regimen. The other is treated weekly with exactly the same exercise regimen, but no laughing sessions. After one year, both groups are questioned about their severe headaches. a. Identify the response variable and the explanatory variable. b. Was this an observational study or an experiment? Explain why. a. The response variable is b. Choose the correct description of the study. A. The study is an observational study because the researchers cannot control the response variable after 1 year. O B. The study is an experiment because the researchers assign subjects to certain experimental conditions and observe the outcomes on the response variable. C. The study is an experiment because the researchers cannot control the response variable after 1 year. O D. The study is an observational study because the researchers only observe values of the ponse and explanatory variables. and the explanatory variable is
Fifty people with severe headaches are randomly divided into two groups. One group is treated weekly with laughing sessions and an exercise regimen. The other is treated weekly with exactly the same exercise regimen, but no laughing sessions. After one year, both groups are questioned about their severe headaches. a. Identify the response variable and the explanatory variable. b. Was this an observational study or an experiment? Explain why. a. The response variable is b. Choose the correct descri O A. The study is an obse B. The study is an expe C. The study is an expe D. The study is an obse the level of headache severity and the explanatory variable is whether or not the person participated in laughing sessions ariable after 1 year. il conditions and observe the outcomes on the response variable. fter 1 year. ponse and explanatory variables.