How can I calculate this through BA II Plus? I know how to do this in steps but it takes too much time. I am calculating the Expected Value, then the Variance and then the Std Dev through the square root.
Exercise is:
The probability distribution for a company’s sales is:
Probability** Sales ($ millions)** 0.05 70 0.70 40 0.25 25
Q. The standard deviation of sales is closest to:
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9.82 million
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12.20 million
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32.40 million