Har: 1.2 Confidence Intervals for a Population Mean,- E Outwond of 7 (1 poing | Question Anempt: 1 of 3 6 Get an education; In 2012 the General Social Survey asked 841 adults how many years of education they had. The sample mean was 7.21 years with a standard deviation of 7.82 years, Part- 0 / 2 () Construct a 90%% confidence Interval for the mean number of years of education. Round the answers to two decimal places. 4 90% confidence interval for the mean number of years of education is