what is the most likely answer for the confidence coefficient of linear correlation if x = the number of hours spent studying for a test, and y = the number of points earned on the test?

Answer 1

Since this is not my area of expertise, I searched Google under the key words "correlation 'confidence coefficient'" to get this:

http://en.wikipedia.org/wiki/Confidence_interval

In the future, you can find the information you desire more quickly, if you use appropriate key words to do your own search. Also see http://hanlib.sou.edu/searchtools/.