I need helps with this exam, I’m very appreciate if anyone can help me to solve it step by step,That’s great, many thanks!,sorry for late reply, can you explain more why they can’t add up?,you are right, it should be 2/5 not 2/3. I just checked another similar question from the lecturer, they must add up to be one. Where are you up to with the paper? can you finish it before mid night today?,Hi Tim, where are you up to with the exam paper?,We expect them to be constant, so they are possible to be zero,Hi Tim, I have other 3 Multiple choice questions(question 12 about “least square estimate” in each test) and i’m not sure about the answers, Can you check if you can help me answer these in an hour? if you can let me know how much I should pay for the work.,Hi Tim, I think I can work it out with question 8a, instead of that can you help me with question number 12 in the attached pdf?,Hi Tim, The question 2d in the exam paper hasn’t been solved yet, Do you miss it?