2. (6 points) Consider a sample of students in a machine learning class with variables X', = hours studied, X, = undergrad GPA, and Y = receive an A. Fitting a logistic regression for estimating Y , we get $ 0 = 5, $ : = 0.045, B . = 1.5, Please answer the following questions. (:) (3 points) Estimate the probability that a student who studies for 30 hour and has an undergrad GPA of 3. 0 gets an A in the class. (b) (3 points) How many hours would the student in part (:) need to study to have a 50% chance of getting an A in the class