Answer:
Expected Return =8.75% Standard deviation =6.375%
Explanation:
Overall expected return
We calculated the return for all the possibilities normal, boom, recession
boom+normal+recession
(final stock price-initial stock price+dividend)/initial stock price*prop
=[(48-40+2.80)/40*1/3]+[(43-40+1.8)/40*1/3]+[(34-4+0.90)/40*1/3]
=0.09+0.04-0.0425
=0.875/8.75%
expected holding period standard deviation
(overall expected return-return of scenario)^2*prop
(8,75-9)^2*1/3+(8,75-4)^2*1/3+(8,75+4.25)^2*1/3
=0.006387/0.6387%