Answer:
z-score of 22 is 0.5
Step-by-step explanation:
we are given
mean =20
so, [tex]\mu=20[/tex]
standard deviation =4
[tex]\sigma=4[/tex]
x=22
we can use formula
[tex]z=\frac{x-\mu}{\sigma}[/tex]
now, we can plug values
[tex]z=\frac{22-20}{4}[/tex]
[tex]z=0.5[/tex]
