1. 2. 3. What is the reference group for all of the estimated ratios of mortality reported inthis table?r What is the sex-adjusted hazard ratio of mortality (and 95% CI} for persons who took 3,9139 steps per day compared to persons who took 4,1300 steps per day?r What is the sexadjusted hazard ratio of mortality (and 95% CI} for persons who took 12,9919 steps per day compared to persons who took 4,9130 steps per day? What is the estimated sex-adjusted hazard ratio for persons who took ll steps per day compared to persons who took 3,9139 steps per day?r What additional information is needed= if any, to assess whether the relationship between mortality and activityr (steps per day} is confounded by sex? 'What conclusion can be made regarding the association between mortality= activity {steps per day) and age when comparing the sex and age adjusted hazard ratios [and 95% C15) to the sex adjusted hazard ratios (and 93% CIs}? What additional information= if any= is necessary to assess whether the fully adjusted (\"Model 3\") relationship bettveen mortality and average steps per day is modied by sex? (please note, there will be several more questions about this study in part B}