The following are the ages of 50 people in a private school whose blood group is '0':20,45,31,47,22,49,60,55,38,33,7 9,18,35,36,33,22,56,65,48,41,51,69, 63,78,73,50,52,44,46,43,18,15,25,74 ,33,34,51,60,40,19,19,53,31,32,52,2 4,74,39,41,25. a)Using a class interval of 11-20,21-30, i)construct a frequency table for distribution ii)draw a histogram for the age distribution b)identity the modal class ii)Use your histogram to estimate the mode of the distribution​