Answer:
The electrical action has the better expected monetary value with 492,000
Explanation:
We will multiply the expected outcome by their probability then, we add them to get the expected monetary value per option:
[tex]\left[\begin{array}{ccccc}$WIND-UP&$Return&$Probability&$Weight\\$Light&325000&0.1&32500\\$Morerate&190000&0.3&57000\\$Heavy&170000&0.6&102000\\$Total&&1&191500\\\end{array}\right][/tex]
[tex]\left[\begin{array}{cccc}$PNEUMATIC&Return&Probability&Weight\\$Light&300000&0.1&30000\\$Morerate&420000&0.3&126000\\$Heavy&400000&0.6&240000\\$Total&&1&396000\\\end{array}\right][/tex]
[tex]\left[\begin{array}{cccc}$Electrical&Return&Probability&Weight\\$Light&-600000&0.1&-60000\\$Morerate&240000&0.3&72000\\$Heavy&800000&0.6&480000\\$Total&&1&492000\\\end{array}\right][/tex]