3.4 on Random Variables

[mine-cetinkaya-rundel]

From Adam Alsamadisi over email:

We’ve corresponded once before, but I believe there’s an error in the slides for 3.4 on Random Variables. Slide #13 has the incorrect formula for the standard deviation of linear combinations of random variables—I thought it may be up for interpretation, but I noticed another slide deck attributed to you (found here: https://docs.google.com/presentation/d/16DKhcwkkA3bulJ7jaECAEASVVM30_Yf_CBD1ACNZYD4/edit#slide=id.g1729f44319_0_0) had the correct calculation.