Answer:
The z- score for a value of 3.99 will be 3.38.
Step-by-step explanation:
It is given that the mean of a set of data is -3.82 and its standard deviation is 2.31.
Thus, the value of the z-score=[tex]\frac{value-mean}{standarddeviation}[/tex]
=[tex]\frac{3.99-(-3.82)}{2.31}[/tex]
=[tex]\frac{3.99+3.82}{2.31}[/tex]
=[tex]\frac{7.81}{2.31}[/tex]
=[tex]3.38[/tex]
Thus, the z- score for a value of 3.99 will be 3.38.