Sums of Discrete Random Variables

1. Let , , ..., denote the outcomes when rolling n fair dice. Let + ... + equal the sum of these n rolls. Use animation to plot probability histograms for the distribution of . Solution

2. Let , , ..., denote the outcomes when rolling n fair m -sided dice. Let + ... + equal the sum of these n rolls. Use animation to plot probability histograms for the distribution of . Superimpose an approximating normal p.d.f. Solution