1. The problem statement, all variables and given/known data M = (a-b)/2 + a a = 15 b=5 What is the uncertainty in M if the uncertainty in a and b is ±0.7? 2. Relevant equations for c = a + b Error in c =√[(error in a)^2 + (error in b)^2] 3. The attempt at a solution Error in M = √[0.7^2 * 3] = 1.2124 The problem I am having is that we learn that the above formula can only work when the errors are independent of one another. the error in a is obviously not independent of the error in a. so i think i'm wrong. What do you think? Thank you.