1) A manufacturer states that their 1.5kg tins of chocolate contain a minimum of 60 chocolates. A sample of 20 tins of chocolates were selected and the number of chocolates in each tin was recorder. 63 58 63 57 60 62 57 72 60 61 56 63 62 63 58 61 63 59 58 60. a) calculate the mean media and mode. b ) calculate the range and interquartile range. c) how do the results obtained compare with the manufacturer claim of a minimum of 60 % in each tin?