A random variable X has $$\overline {\text{X}} $$ = 0 & $$\sigma _{\text{x}}^2$$ = 1. Form a new random variable Y = 2X + 1. The values of $$\overline {\text{Y}} $$ & $$\sigma _{\text{y}}^2$$ are:

A. True B. False

A. Space diversity B. Frequency diversity C. Broad band antenna D. Directional antenna

A. A double-tuned amplifier B. A high gain D.C. amplifier C. A cathode follower stage D. None of the above

A. Filter method B. Phase cancellation method C. Good attenuation characteristics D. All of the above