Mean is 
and a standard deviation is 
, then the variable 
.
Use substitution
.
This substitution gives you that 
.
a. For X=130, 
and 
(the decimal value is taken from the Standard Normal Distribution Table).
b. For X=90, 
and for X=110, 
. Then 
(the decimal value is taken from the Standard Normal Distribution Table).
Answer:
11
Step-by-step explanation:
First subtract
19-8= Z
So solution would be
Z=11
The number pi is a constant, it's the ratio of a circles circumference to it's diameter.
Answer:
Step by step explanation:
1.PY=LA
2.NO=OS.
Answer:
A
Step-by-step explanation:
