Answer:
The standard deviations is
Step-by-step explanation:"
Given mean female height = 64 inches and standard devaiton = 3 inches and 69 inches tall is Sally.
We know the distance of a data point from:
Z =
=
So the standard deviations is
An equivalent ratio would be 7:10 or 70:100 or 42:60 and so on...
y-1= ±3/10(x-2)
Im not sure how to get this answer but my teacher gave it to me so i hope this helps!