14 Frank attends a college that charges R 14 000 tuition per semester for 12 credit hours of classes. If tuition is raised by 9% next year. 1.4.1 How much more will he pay for two semester of classes with the same course load? (3) 1.4.2 If Frank works as a waiter at an upmarket restaurant in town earning R 80 per hour and pays 15 % in taxes. How many extra hours must he work to make up for the tuition increase? Round of to the nearest whole hour. (5) QUESTION 2 [25] An economist conducted a study to identify the percentage of family income allocated to the purchase of groceries. She surveyed a random sample of 50 families and compiled the following numeric frequency distribution: Percentage of income Number of families 10 - under 20% 6 20 - under 30% 14 30 - under 40% 16 40-under 50% 10 50 - under 60% 4 2. 1 Draw a histogram and the downward sloping ogive to portray the above data (6) 2.2 Compute for the family income allocated to grocery: 2.2.1 the mean. (3) 2.2.2 the median and the mode (6) 2.3 From the value computed in 2.2 comment on the skewness of the above data (2) 2.4 calculate the standard deviation of the above data. (5) 2.5 Calculate the upper quartile for the above data (3)