Question 4. (1.5 marks) The following table gives the frequency distribution of the total miles driven during 2015 by 300 car owners. Miles Driven in 2015 (in thousand) Number of Car Owners 0 to less than 5 5 to less than 10 10 to less than 15 15 to less than 20 20 to less than 25 25 to less than 30 30 to less than 35 35 to less than 40 a) Find the mean, variance, and standard deviation. b) Give a brief interpretation of the values in the column labeled my in your table of calculations. c) What does Imf represent