You are expected to use a z-score table to find how many standard deviations correspond to having 10% outside the bounds. It is like having 68% within 1σ. The table interpolates.
I'm sorry I looked everywhere and I still cannot find how to calculate with the data provided. I'm new to stats so any help is appreciated, if there is any more information let me know and I could solve it.
Answer:
![A=\pi\times r^2](https://tex.z-dn.net/?f=A%3D%5Cpi%5Ctimes%20r%5E2)
Step-by-step explanation:
In order to find the area of a circle we multiply π by the radius, and to find the radius of a circle we have to look at the line that stops directly in the middle of the circle.
![\pi\times r](https://tex.z-dn.net/?f=%5Cpi%5Ctimes%20r)
Once we then have the radius, we simply multiply the radius, (with an exponent of 2) by π and then we will have our answer. Of course, round if needed.
![A=\pi\times r^2](https://tex.z-dn.net/?f=A%3D%5Cpi%5Ctimes%20r%5E2)
Hope this helps.
Try using pythagorean theorem
-9 is farther from 0 on the number line.