An Investment Has the Following Range of Outcomes and Probabilities

question 1

Essay

An investment has the following range of outcomes and probabilities. $$\begin{array}{l}\begin{array} { c c } \text { Outcomes (Percent)}&\text { Probabilities of Outcomes }\\5 \% & .25 \\7 \% & .50 \\12 \% & .25\end{array}\end{array}$$ Calculate the expected value and the standard deviation (round to two places after the decimal point where necessary).

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Definitions:

Membracinae

A subfamily of insects within the Hemiptera order, known for their pronounced pronotum that often mimics plant parts.

Male Parental Care

The involvement of males in raising their offspring, including feeding, defense, and teaching, which is observed in various animal species.

Social Species

Species characterized by complex interactions within their communities, often involving cooperative living, communication, and social structures.

Solitary Nesters

Animals that prefer to build and inhabit nests alone rather than in communal or shared spaces.