2. A recent review of a compact disc distributor's product line is summarized as follows: (6 marks) Selling Price ($) Number of Titles 0 to under 5 51 5 to under 10 184 10 to under 15 241 15 to under 20 1468 20 to under 25 1339 25 to under 30 255 30 to under 35 98 35 to under 40 14 a) Determine the mean b) Determine the standard deviation