Questions 7-10. Suppose you are interested in studying the effectiveness of recreational harijuana usage to reduce stress. To do this, you collect a random sample of Ann Arbor residents nd ask if they use recreational marijuana and measure perceived stress using the numerical erceived Stress Scale (PSS), a common psychological instrument for measuring the perception of stress. Lower PSS scores indicate less stressed individuals. The data for your random sample summarized below. Perceived Stress Scale (PSS) Recreational Marijuana N Median Mean Standard Deviation Users 63 14.8 15.6 7.1 Non-users 357 15.9 16.3 7.4 Let M/ be an indicator variable for recreational marijuana usage, such that M/ = 1 if an individual uses marijuana recreationally and M/ = 0 if they do not. Suppose the following model is fit to these data: E[PSS] = Bo + B1 x MJ 7. Compute the fitted value for Bo- (Numerical Response) 8. Compute the fitted value for , . (Numerical Response)Suppose the following p-values are obtained for the fitted regression model: Ho: Bo = 0 vs. H1:po # 0 hasp