Note: Please answer this question only by typing your answers in the typing space avaltable for this question. Imagine that we trained a linear regression model in a medical dataset The model predicts the expected lifetime of a patient To each of the features in our dataset, the model would assign a weight 08176 marks] (a) For the following quantities, state if you believe the weight attached to this quantity is a positive number, a negative number. orzero. Note. if you believe that the weight is a very small number, whether positive or negative, you can say zero. 1. Number of hours of exercise the patient gets per week 2 Number of cigarettes the patient smokes per week 3. Number of family members with heart problems 4. Number of siblings of the patient 5. Whether or not the patient has been hospitalized (b) The model also has a bias. Do you think the bias is positive, negative, or zero