on the following information of Stock A$,$ what is the expected return of this sto

State of Economy

Recession

Normal

Boom

Probability of State of

Economy

$24\%$

$45\%$

$31\%$

Rate of Return if State

Occurs

$-9\mathrm{.}20\%$

$10\mathrm{.}70\%$

$21\mathrm{.}40\%$