875002.qx3zay7 Jump to level 1 Suppose the mears height in inches of all 9th grade students at one high school is estimated. The population standard deviation is 2 inches. The heights of 9 randomly selected students are 64, 65, 68, 69, 63, 74, 62, 73 and 62. a = 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] 2 Check Next is section? I Q! Provide feedback