Texas Instruments TI-82 STATS Manual Book page 251

2.SampTTest
Input:
Calculated results:
Drawn results:
(two-sample t test; item
2.SampTTest
the means of two populations (m
samples when neither population standard deviation (s
known. The null hypothesis H
the alternatives below.
H : m (
ƒm
m1:ƒm2
a 1 2
H : m <m (
m1:<m2
a 1 2
H : m >m (
m1:>m2
a 1 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
,
,
Inferential Statistics and Distributions 13–13
4
and m
1
: m =m is tested against one of
0 1 2
)
)
)
) tests the equality of
) based on independent
2
or s
1
Stats
,
,
) is
2