A

**z-score**tells you how many standard deviations away an individual data value falls from the mean. It is calculated as:**z-score**= (x – μ) / σ

where:

**x**: individual data value

**μ**: population mean

**σ**: population standard deviation

This tool automatically generates z-score practice problems and provides solutions.

The height of plants in a certain garden are normally distributed with a mean of 12.3 inches and a standard deviation of 4.1 inches.

**Calculate the z-score of a plant that is 13.5 inches tall. Round to two decimal places.**