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Exercise 2.27 (Bernoulli random variables)

Let 𝜖1,𝜖2,⋯ ∈{0,1} be random variables that are independent and identically distributed copies of the Bernoulli random variable with expectation 1∕2.

1.
Show that the random variable ∑ ⁡ n=1∞2−n𝜖n is uniformly distributed on the unit interval [0,1].
2.
Show that the random variable ∑ ⁡ n=1∞2 × 3−n𝜖n has the distribution of Cantor measure.