Texas Instruments TI-84 PLUS - Graphing Calculator Manual Book page 233

2-SampTTest
(two-sample
2-SampTTest
) based on independent samples when neither population standard deviation (s
m
2
known. The null hypothesis H
• H : m (m
ƒm 1: ƒm 2
a 1 2
• H : m <m (m
1:< m 2
a 1 2
• H : m >m (m
1:> m 2
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
Input:
Calculated
results:
Drawn
results:
test; item ) tests the equality of the means of two populations (m
t 4
: m =m is tested against one of the alternatives below.
0 1 2
)
)
)
Chapter 13: Inferential Statistics and Distributions
Stats
and
1
or s ) is
1 2
226