The Frequency of Color Blindness (Dyschromatopsia) in the Caucasian American

Multiple Choice

The frequency of color blindness (dyschromatopsia) in the Caucasian American male population is estimated to be about 8%. Let's call X the number of color-blind individuals in a random sample of 8 Caucasian American males. The table gives the probability distribution for X.
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$$\begin{array} { | l | l | l | l | l | l | l | l | l | l | } \hline X & 0 & 1 & 2 & 3 & 4 & 5 & 6 & 7 & 8 \\\hline P ( X ) & 0.513 & 0.357 & 0.109 & 0.019 & 0.002 & 0.000 & 0.000 & 0.000 & 0.000 \\\hline\end{array}$$ What is the standard deviation of this distribution?

A) 0.64
B) 0.766
C) 0.096
D) None of these choices is correct.