The historical returns on a portfolio had an average return of 8 percent and a standard deviation

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The historical returns on a portfolio had an average return of 8 percent and a standard deviation of 12 percent. Assume that returns on this portfolio follow a bell-shaped distribution.
a. What percentage of returns were greater than 20 percent?
b. What percentage of returns were below –16 percent?

Portfolio
A portfolio is a grouping of financial assets such as stocks, bonds, commodities, currencies and cash equivalents, as well as their fund counterparts, including mutual, exchange-traded and closed funds. A portfolio can also consist of non-publicly...
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