sic Making_-_60669/chapter/5/section/3 cision Making home > Tieans zyBooks c intervals for population means. p to level 1 se the mean height in inches of all 9th grade students at one high school is ted. The population standard deviation is 2 inches. The heights of 7 nly selected students are 62, 72, 68, 69, 61, 62 and 72. 12 34 n of error at 95% confidence level - confidence interval = [ vedback hecksic Making_-_60669/chapter/5/section/3 cision Making home > Tieans zyBooks c intervals for population means. p to level 1 se the mean height in inches of all 9th grade students at one high school is ted. The population standard deviation is 2 inches. The heights of 7 nly selected students are 62, 72, 68, 69, 61, 62 and 72. 12 34 n of error at 95% confidence level - confidence interval = [ vedback heck