Part 1:
Given a number line with the point

and the point

The sampling error is given by:

Part 2:
Given a number line with the point

and the point

The sampling error is given by:
Answer:
The radius of the circle required is 5 inches
Step-by-step explanation:
we know that
The diagonal of the square is the diameter of the circle
The length side of the square is half the apothem
Let
a ----> the apothem
r ---> the radius of the circle (half the diagonal of the square)
Applying the Pythagorean Theorem

we have

substitute


Y = kx
k = y/x = 15/3 = 5
<span>when y = 4
5 = 4/x
x = 4/5
answer
</span><span>when y = 4 , x = 4/5</span>
4x + 1 = 90 degrees
4x = 89
x = 22.25