Errors in an experimental transmission channel are found when the transmission is checked by a certifier that detects missing pulses. Let X be the number of errors found in an eight-bit byte with the following PMF. X p(x) .verify that this is a valid PMF. etermine the mean of * 3. Determine E(X^2) 4. Determine Var(X) using the definition. 5. Compute E(X2) - [E(X)]². 147 0.7 0.2 0.1

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