A financial analyst forecasts two equally likely scenarios for the economic state in the next month: Economic state Return of stock B Boom 16 % Normal 10% How much is the standard deviation of the returns for stock B ?

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A financial analyst forecasts two equally likely scenarios for the economic state in the next month: Economic state Return of stock B Boom 16% Normal 10% How much is the standard deviation of the returns for stock B? Select one: a 0.045% b.0.09% 0.9% 0.3%