Given the following probability distribution, what are the expected return and the standard deviation of returns for Security J? Is State Pi rj 1 0.1 7% 2 0.1 10% 3 0.8 8% O 8.3%; 0.8% O 8.1%; 0.6% O 8.0%; 0.6% O 8.2%; 0.7% O 8.1%; 0.7%