Texas Instruments TI-84 Guidebook - Page 233
SampTTest, SAMP1={12.207
UPC - 033317190171
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2-SampTTest 2-SampTTest (two-sample t test; item 4) tests the equality of the means of two populations (m1 and m2) based on independent samples when neither population standard deviation (s1 or s2) is known. The null hypothesis H0: m1=m2 is tested against one of the alternatives below. • Ha: m1ƒm2 (m1:ƒm2) • Ha: m1m2) In the example: SAMP1={12.207, 16.869, 25.05, 22.429, 8.456, 10.589} SAMP2={11.074, 9.686, 12.064, 9.351, 8.182, 6.642} Data Input: Stats Calculated results: Drawn results: Chapter 13: Inferential Statistics and Distributions 226
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Chapter 13: Inferential Statistics and Distributions
226
2-SampTTest
2-SampTTest
(two-sample
t
test; item
4
) tests the equality of the means of two populations (
m
1
and
m
2
) based on independent samples when neither population standard deviation (
s
1
or
s
2
) is
known. The null hypothesis H
0
:
m
1
=
m
2
is tested against one of the alternatives below.
•
H
a
:
m
1
ƒm
2
(
m
1:
ƒm
2
)
•
H
a
:
m
1
<
m
2
(
m
1:<
m
2
)
•
H
a
:
m
1
>
m
2
(
m
1:>
m
2
)
In the example:
SAMP1={12.207, 16.869, 25.05, 22.429, 8.456, 10.589}
SAMP2={11.074, 9.686, 12.064, 9.351, 8.182, 6.642}
Data
Stats
Input:
Calculated
results:
Drawn
results: