kamara5

@KillaBeez -- Just a heads up sX and sY are SAMPLE standard deviations, the next one down from sX is σX thats population std deviation for X, and after sY is σY std deviation for Y.

I know on the mock exam afternoon Q 119 I did it in 30 sec or less, but it implicitly states SAMPLE variance so i squared sX instead of σX as I normally would. Whats the correct move if your not told sample or population?