Sums of Independent Normal Random Variables

36.1 Sums of Indep. Normals are Normal

36.2 scaling and shifting to standard Normal

36.3 CDF example 1

36.4 CDF example 2

36.5 threshhold example

36.6 centered interval example

36.7 adding two kinds of indep. Normals

36.8 difference of two Normals