Question: Input to a communications channel comes from the set { 0 , 1 , 2 , 3 , 4 , 5 , 6 } .

Input to a communications channel comes from the set {0,1,2,3,4,5,6}. The channel output is =+ mod 7, where is equally likely to be +1 or -1.
a) What is the entropy of if inputs are equiprobable?
b) What is the entropy of given that =4?

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