Let $\displaystyle {Y}\sim{B}{\left({n}={2},{p}={0.7}\right)}$ with the following probability distribution table:

$\displaystyle {k}$	$\displaystyle {P}{\left({Y}={k}\right)}={{C}_{{k}}^{{n}}}{p}^{{k}}{\left({1}-{p}\right)}^{{{n}-{k}}}$
0	$\displaystyle {P}{\left({Y}={0}\right)}=$ 0.09
1	$\displaystyle {P}{\left({Y}={1}\right)}=$ 0.42
2	$\displaystyle {P}{\left({Y}={2}\right)}=$ 0.49

Find the mean and standard deviation of $\displaystyle {X}$:

1.  $\displaystyle {E}{\left[{X}\right]}=$
2.  $\displaystyle {S}{D}{\left[{X}\right]}=$