es A game of chance offers the following odds and payoffs. Each play of the game costs $100, so the net profit per play is the payoff less $100. Probability 0.20 0.40 Payoff $500 Net Profit 0.40 100 0 $400 0 -100 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. What is the standard deviation of the expected returns? Note: Enter your answer as a percent rounded to 2 decimal places. a-1. Expected cash payoff a-2. Expected rate of return b-1. Variance b-2. Standard deviation % %