Respuesta :

0.67

1) Given that we've got the following data:

[tex]\mu=75,\sigma=15,X=85[/tex]

We can plug them all together into the Z score formula:

[tex]Z=\frac{X-\mu}{\sigma}=\frac{85-75}{15}=\frac{10}{15}\approx0.67[/tex]

Thus, the Z-score is 0.67