Round each z-score to the nearest hundredth. A data set has a mean of x=6.8...

Obtain the Z-score for the random variable X value equals 6.2.
The Z-score for the random variable X value equals 6.2 is obtained below as follows:
Let X denote the random variable with the population mean 6.8 and the standard deviation of 2.5.
The required value is,
${\displaystyle Z=\frac{X-\mu }{\sigma }}$
${\displaystyle =\frac{6.2-6.8}{2.5}}$
${\displaystyle =\frac{-0.6}{2.5}=-0.24}$
The Z-score for the random variable X value equals 6.2 is -0.24.

Answer is given below (on video)