How to you get the smaller value, and the larger value?

Jump to level 1 Suppose the mean height in inches of all 9th grade students at one high school is estimated. The population standard deviation is 3 inches. The heights of 6 randomly selected students are 61, 64, 60, 70, 70 and 65 = Ex: 12.34: Margin of error at 90% confidence level = Ex: 1.23 90% confidence interval = [ Ex: 12.34 Ex: 12.34 ] [smaller value, larger value]