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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