Consider a communication scheme where the binary-valued signal X satis

1.	Consider a communication scheme where the binary-valued signal X satisfies {
A.	strictly positive
B.	zero
C.	strictly negative
D.	strictly positive, zero, or strictly negative depending on the nonzero value of 𝜎2
Answer» D. strictly positive, zero, or strictly negative depending on the nonzero value of 𝜎2

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