2-Sampftest - Texas Instruments TI-84 Plus Manual Book

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2-SampFTest

2-SampFTest
2-SampFTest 2-SampFTest
Ü (two-sample Ü-test; item
2-Samp Test
population standard deviations (s
deviations are all unknown.
2 2
Sx1 /Sx2 , tests the null hypothesis H
: s ƒ s
• H (s
1:
a 1 2
: s
• H <s (s
1:<
a 1 2
: s
• H >s (s
1:>
a 1 2
Chapter 13: Inferential Statistics and Distributions
and s
1
Ü
2-Samp
ƒs
)
2
s
)
2
s
)
2
) computes an Ü-test to compare two normal
E
). The population means and standard
2
, which uses the ratio of sample variances
Test
: s
=s against one of the alternatives below.
0 1 2
361