Question: Exercise 4. (/30) Let X1, X2, ... be iid random variables with P [X1 = 1] = p and P [X1 = -1] = q

![with P [X1 = 1] = p and P [X1 = -1]](https://dsd5zvtm8ll6.cloudfront.net/si.experts.images/questions/2024/09/66ef978755056_92766ef978732dca.jpg)
Exercise 4. (/30) Let X1, X2, ... be iid random variables with P [X1 = 1] = p and P [X1 = -1] = q = 1 -p with 0
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