1. Given the following probability distributions:

   Distribution A		Distribution B
   __X__	_P(X)_		__X__	_P(X)_
   0	0.50		0	0.05
   1	0.20		1	0.10
   2	0.15		2	0.15
   3	0.10		3	0.20
   4	0.05		4	0.50

   Compute the standard deviation for Distribution A and Distribution B.

   a.	Distribution A: 1.50 and Distribution B: 1.50
   b.	Distribution A: 1.50 and Distribution B: 1.22
   c.	Distribution A: 1.22 and Distribution B: 1.50
   d.	Distribution A: 1.22 and Distribution B: 1.22
   e.	Distribution A: 1.00 and Distribution B: 1.05