[vimeography id="109"]


We discussed the standard normal distribution and tried hands-on practice 3 Q1, 2, 3 and 5. Next, we discussed linear combination of normal distributions. It is very important for students to understand that in normal distributions, x_1+x_2 \neq2x. We discussed the ways to identify when we are adding and when we are multiplying. We also discussed the properties of mean E(x) and variance Var(x). Lastly, we finished up the lesson with the kind of question that requires us to change the unit.