>9 A regression model has 3 Sum of Squares residual = 39 and Sum oquuares total = ?5. What was the R2? 0 Can't calculate from the given information Q 0.48 O 0.52 O 1.92 Q Mary participated in a study exploring the relationship between self-esteem and happiness. Mary's self-esteem was a 4 (in a scale from 1 - low to 7 - high] and her happiness level was 72 {in a scale from 0 - unhappy to 100 - happy]. However. the linear regression model run by the researchers predicted that the happiness score for someone with a self- esteem = 4 was 83.5. What is the residual associated with Mary's case? 0 0.86 0 155.5 0 15.5 0 11.5 1point The researchers ran a studyr predicting life expectancy [in yea rs) from hours of ewe rcise per wee k. The}r found that 1 hour increase of exercise predicted a .5 year in crease in life expectancy. The intercept for the model was 4-0. Which of the following is the correct equation for the line of best t? 0 yi = .05x, , 40 O yi = 40xi + .05 O yi = .05xi + 40 O yi = -.05xi + 40 1point Which of the following are the degrees of freedom for a linear regression with 500 participants? 498 1 499 0000 501