Suppose that there were a strong correlation between the variables g and h Which of these is a true statement?
A. g must cause h.
B. g must not cause h.
c. h must cause g.
O D. g may cause h.

You are standing next to a really big circular lake. you want to measure the diameter of the lake, but you don't want to have to swim across with a measuring tape! you decide to walk around the perimeter of the lake and measure its circumference, and find that it's 400\pi\text{ m}400? m. what is the diameter dd of the lake?