(Risk diversification on gambles) Walking down the street of Spartanburg (your hometown), you encounter John, a street hustler. John, is running a coin-toss game, which works like this: You pay John $0.80. He flips a coin. If the coin comes up heads, he pays you $3, and if the coin comes up tails, you pay him $1.

a. What is your expected return from this game?

b. What is the standard deviation of your return from playing this game?