Solve please

1).given observations 4,9,11,14,37 mean deviation about median is

a).11,                  b).8.5,                   c).7,                     d).4.75.

2).if X ~ n(3,36) & Y~ N(5,64) then X + Y ~ (8,A).the value of A is

a)100,                     b).10,                          c).64,                            d).36.