Suppose the mean height in inches of all 9th grade students at one high school is estimated. The population standard deviation is 5 inches. The heights of 8 randomly selected students are 73, 73, 68, 64, 72, 73, 71 and 61.

Suppose the mean height in inches of all 9th grade students at one high school is estimated. The population standard deviation is 5 inches. The heights of 8 randomly selected students are 73, 73, 68. 64, 72, 73. 71 and 61. a = _ Margin of error at 99% condence level = EX: 1-23 99% condence interval = [ EXI 12134 J EX212134 l [smaller value larger value}