You are concerned that the incidence of smoking is increasing among young people. You create the table below that shows student ages in the columns and smokers or non-smokers in the rows. Ages 18 - 24 25 - 29 30 -34 Total Non-smoker 96 63 10 169 Smoker 24 7 0 31 Total 120 70 10 200 (a) Overall, what percentage of students smoke? [3 mark] ANSWER (Percentage, 2 decimal places): (b) What percentage of 18 to 24 year olds smoke? [3 marks] ANSWER (Percentage, 2 decimal places): (c) If a student is 25 years or older, what is the probability he/she is a non-smoker? [3] ANSWER (4 decimal places): (d) If a student smokes, what is the probability he/she is under age 30? [3 marks]