Texas Instruments -84 Plus, Руководство пользователя

Страница: 636 / 696

Appendix B: Reference Information 633
2
-
Samp
Ü
Test
for the alternative hypothesis
s
1
ƒ s
2
. Limits must satisfy the following:
where: [
Lbnd,Ubnd
] = lower and upper limits
The
Ü
-statistic is used as the bound producing the smallest integral. The remaining
bound is selected to achieve the preceding integral’s equality relationship.
2-SampTTest
2-SampTTest 2-SampTTest
2-SampTTest
The following is the definition for the
2-SampTTest
. The two-sample
t
statistic with
degrees of freedom
df
is:
p
2
--- f x n
1
1 n
2
1 – , – ,
( )
x d
0
L
bnd
∫
f x n
1
1 n
2
1 – , – ,
( )
x d
U
bnd
∞
∫
= =
t
x
1
x
2
–
S
---------------- =