Question 632891
  <pre><font face = "Tohoma" size = 3 color = "indigo"><b> 
Hi,
Calculate the Expected Value(Sum of PX) = &#956; = 0
Then Calculate the Variance(Sum of P[X-&#956;]^2) = 2.94
SD = {{{sqrt(2.94) = 1.7146}}} 
X	P	PX	P[X-&#956;]^2    {{{mu = 0}}}
-4	0.02	-0.08	0.32   {{{(-4)^2 * .02 = .32}}}
-3	0.07	-0.21	0.63
-2	0.1	-0.2	0.4
-1	0.15	-0.15	0.15
0	0.3	0	0
1	0.18	0.18	0.18
2	0.1	0.2	0.4
3	0.06	0.18	0.54
4	0.02	0.08	0.32
Sum		0	2.94