Texas Instruments TI-84 Plus Guide Book

Appendix B: Reference Information 632
2-SampFTest
2-SampFTest2-SampFTest
2-SampFTest
Below is the definition for the
2-SampÜTest.
2-SampÜTest for the alternative hypothesis .
2-SampÜTest for the alternative hypothesis .
Sx1, Sx2 =
Sample standard deviations having
and degrees of freedom
df,
respectively.
Ü =
Û-statistic =
df(x, , )
=
Ûpdf( ) with degrees of freedom df, ,
and
p
= reported p value
n
1
1–
n
2
1–
Sx1
Sx2
---------
⎝⎠
⎛⎞
2
n
1
1– n
2
1– n
1
1–
n
2
1–
σ
1
σ
2
>
pf
F
α
∫
xn
1
1 n
2
1–,–,()dx=
σ
1
σ
2
<
pf
0
F
∫
xn
1
1 n
2
1–,–,()dx=

Texas Instruments TI-84 Plus Specifications

General

Battery type	AAA
Power source	Battery
Number of batteries supported	4
Type	Graphing
Cover	No
Form factor	Pocket
Control type	Buttons
Product color	Black
USB port	Yes
USB 2.0 ports quantity	1
Digits	- digits
Display number of lines	8 lines
Display number of characters	16
RAM capacity	0.024 MB
ROM capacity	0.480 MB
Storage media type	-