Problem 7.7 Expected return and standard deviation A game of chance offers the following odds and payoffs. Each play of the game costs $200, so the net profit per play is the payoff less $200. a-1. What is the expected cash payoff? Note: Round your answer to the nearest whole dollar amount. a-2. What is the expected rate of return? Note: Enter your answer as a percent rounded to the nearest whole number. b-1. What is the variance of the expected returns? Note: In the calculation, use the percentage values, not the decimal values for the rates of return. Do not round intermediate calculations. Round your answer to the nearest whole number. b-2.hat is the standard deviation of the expected returns? Note: Enter your answer as a percent rounded to 2 decimal places