. Question 19 v Part1 of3 Suppose that you have a population of kids at a school, and you wish to find their mean age. There are 25 kids aged 5, 22 kids aged 7, 40 kids aged 8 and 38 kids aged 9. 6+7+8+9? Would it be correct to simply find the mean age by taking 4 D Yes, there are only 4 ages so this is correct 0 No, since this would be treating the data as if there were only 4 kids, one of each age Find the mean of this data set. Round to two decimals. 0 Question 21 v Frequency 18.5 23.5 28.5 33.5 38.5 43.5 48.5 Ages q Use the grouped data formula to estimate the mean age of the people in the sample shown above. Use the midpoint of each bar as the data value. Round your answer to one decimal