A genetics experiment involves offspring peas in groups of four. Letting X count the number of peas in the group with white flowers, the valid probability mass function for X is given in the table below.

x 0 1 2 3 4 p(X = x) 0.06 0.26 0.38 0.22 0.08

What is the probability that more than half of the peas in the group have white flowers?

What is the expected value of X?

What is the standard deviation of X?