Northern Wind Power a new age energy company is considering the introduction of a product intended to use wind as an energy- producing device. The possible levels of unit sales and the probabilities of occurrence are given. Acceptance Potential LOW Moderate Strong Very strong Sales in Units 20 zo 80 100 Probabilities 340 020 010 0.30 a. What is the expected value of unit sales for the new product? Expected value 60 b. What is the standard deviation of unil sales? (Do not round intermediate calculations. Round the final answer to 2 decimal places.) Standard deviation