Student life did a survey of students in which they asked about voting in the most recent student election. The results were: Part-time Student Full-time Student Row Total Voted 15 20 35 Did not vote 25 30 55 Column Total 40 50 90 If a student is selected at random from this group of 90 students, find the probability that: a) the student voted in the most recent election. b) the student voted in the most recent election, given the student is part-time. c) the student voted in the most recent election and the student is part-time. d) Are the events “student voted” and “student is part-time” independent? Explain.