Consider the following information:

State Probability ABC, Inc. $(\%)$

Boom $.2515$

Normal $\mathrm{.}508$

Slowdown $\mathrm{.}154$

Recession $\mathrm{.}10-3$

What is the expected return?

What is the variance?

What is the standard deviation?

please use the formulas

please not use excell vs$.$ to find std $,$variance etc.