Intro

We know the following expected returns for stocks A and B$,$ given different states of the economy:

$\backslash$table$[[$State $(s),$Probability,$E(r_{A,s}),E(r_{B,s})$

Part$1$

What is the expected return for stock A$?$

Part $2$

What is the expected return for stock B$?$

Part $3$

What is the standard deviation of return for stock A$?$

Part $4$

What is the standard deviation of returns for stock B$?$