I am somewhat confused on these 2. I want to know what the difference is in finding the mean. For one means, I did 4(0.0537)+5(0.1124)+6(.1473) and etc. For the other problem, to find he mean, you have to multiply, it was more like 0(0.0776);1(.103); 2(.047) and etc. I am just wondering the term I have to really look out for when I look for the mean in these 2 problems. Meaning, when are the times I have to add abd tge other times I have to multiply.

P.S. I know I can just input this in my TI84 and get the answers quickly, but I am more curious by putting it on paper.

I also know the rule is u=E[X.P(X)]