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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, . We discussed the ways to identify when we are adding and when we are multiplying. We also discussed the properties of mean and variance . Lastly, we finished up the lesson with the kind of question that requires us to change the unit.