Question 12 (5 points) A linear regression model was fitted to systolic blood pressure (sbp) of low birth weight babies and the estimated regression coefficients are listed below. Which independent variable is significantly associated with SBP at a significance level of 5%? Female is the female indicator, i.e. 1 if sex=female and 0 if sex=male. sbp | Coef. Std. Err. t P>|t| [95% Conf. Interval] a: + gestage | 1.262588 .4316449 2.88 0.005 .3939838 2.131192 Female | 1.356308 2.223097 0.61 0.543 3.055924 5.76854 _ccms | 10.00706 12.?2274 0.79 0.433 15.24406 35.25818 0 gestage Question 13 (5 points) Continued from Q12. Use the fitted model to predict the systolic blood pressure (sbp) for a 35 week male, where Female is the female indicator, Le. 1 if sex=female and 0 if sex=male. O 10.00706 0 54.19764 0 55.553948 0 12.625956