The height is above the mean by 2.31 standard deviations.
The z score is used to determine by how many standard deviations the raw score is above or below the mean. The z score is given by:
[tex]z=\frac{x-\mu}{\sigma} \\\\where\ x=raw\ score, \mu=mean,\sigma=standard\ deviation\\\\\\Given\ that\ x=191,z=2.31.Hence:\\\\2.31=\frac{191-\mu}{\sigma} \\\\191-\mu=2.31\sigma[/tex]
The height is above the mean by 2.31 standard deviations.
Find out more on z score at: https://brainly.com/question/15016913
