Given the following description of variables, Variable Description minex Minutes of exercise per week (continuous outcome variable) male Indicator that the person is male female Indicator that the person is female agegt 40 Indicator that the person is more than 40 years old agele 40 Indicator that the person is less than or equal to 40 years old smokes Indicator that the person smokes we obtain the estimated linear regression model (Model 1) minex,=a + female, a , + agele 40, a2 1. How do you assess whether there is a difference between the average number of minutes of exercise per week between males and females (holding other variables constant)? 2. What is the interpretation of the estimated coefficient , if we assume it was significant (p-value