Adan has decided to purchase an $9000 car. he plans on putting 20% down toward the purchase and financing the rest at 7.9% interest rate for 3 years. find his monthly payment a) $225.29 b) $298.81 c) $204.78 d) $236.89
How to square the standard deviation? how do you get the bottom number so you can actually square it? for instance, 22/6 squared is 1.91, where did they get the 6 from?