Question 1124128

(a) Find the z score corresponding to
x = 25.

 Z = (X - μ) / σ
Z = (25 - 30) / 5

Z = -1


(b) Find the z score corresponding to 
x = 43.


 Z = (X - μ) / σ
Z = (43 - 30) / 5

Z = 2.6


(c) Find the raw score corresponding to 
{{{z = -3}}}.

 raw value of {{{X}}}?

 Z = (X - μ) / σ
-3 = (X - 30) / 5
-15=X - 30
30-15=X
X=15


(d) Find the raw score corresponding to 
z = 1.1

 Z = (X - μ) / σ
1.1 = (X - 30) / 5
1.1*5=X - 30
30+5.5=X
X=35.5