An investor has purchased a mining stock. It is expected that during a good economy, the stock will provide an 8% return, while in a poor economy the stock will provide a 20% return. The probability of a poor economy is expected to be 30%. Given this information, calculate the standard deviation for this stock.
A) 9.1%
B) 8.2%
C) 7.3%
D) 6.4%
E) 5.5%

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The Answer of An investor has purchased a mining stock. It is expected that during a good economy, the stock will provide an 8% return, while in a poor economy the stock will provide a 20% return. The probability of a poor economy is expected to be 30%. Given this information, calculate the standard deviation for this stock.
A) 9.1%
B) 8.2%
C) 7.3%
D) 6.4%
E) 5.5%

An Investor Has Purchased a Mining Stock