=+78. A message is transmitted using a binary code of 0s and 1s. Each transmitted bit (0 or 1) must pass through three relays before reaching a receiver. At each relay, the probability is .20 that the bit sent is different from the bit received (a reversal). Assume that relays operate independently of one another.

Transmitter Relay 1 Relay 2 Relay 3 Receiver