Question: Suppose we have a six-sided die, which we roll n times, and let X denote the number of times we role a 1. (a) What

Suppose we have a six-sided die, which we roll n times, and let X denote the number of times we role a 1. 

(a) What is E[X]? 

(b) Show that X < n/3 with high probability.

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