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A random variable $X$ has the probability

$$\begin{pmatrix} 20 \\\ k \end{pmatrix}(0.44)^{k}(0.56)^{20-k}$$

...associated with the value $k$ for $k= 0,1,2,3,…,20$.

What is the mean of $X$?

$4.4$

$5.6$

$8.8$

$10$

$11.2$