The estimated distribution (in millions) of the population by age in a certain country for the year 2015 is shown in the pie chart. Make a frequency distribution for the Under 4 years: 23.6 data. Then use the table to estimate the sample mean and the sample standard deviation of the data set. Use 70 as the midpoint for "65 years and over." 15-14 years: 42.4 1 15-19 years: 17.6 20-24 years: 24.1 25-34 years: 47.9 35-44 years: 40.3 45-64 years: 82.2 65 years and over: 57.8 The sample mean is x= (Round to two decimal places as needed!) Question Viewer Enter your answer in the answer box and then click Check Answer. ? part remaining Clear All Check