MATH 251, Prob & Stat I,
help on algebra of means/ variances problems
Distributions for C:
y\\x 0 4 10
10 w = x + y, in table body
4 *4 *8 *14 *14
2 *2 *6 *12 *12
1 *1 *5 *11 *11
1 *1 *5 *11 *11
W 1, 2, 4, 5, 6, 8, 11, 12, 14
p 2 1 1 2 1 1
4
2 2
(number of times the W-value occurs)
Divide all p-values
by 16, to get the probability.
and D:
y\\x 0 4 10 10 z =
x - y
4 *-4 *0 *6 *6
2 *-2 *2 *8 *8
1 *-1 *3 *9 *9
1 *-1 *3 *9 *9
Z -4, -2, -1, 0, 2, 3, 6, 8, 9
p 1 1 2 1 1
2 2 2 4
(number of times the Z-value occurs)
Divide all p-values
by 16, to get the probability.