Texas Instruments 83PL/CLM/1L1/V - 83 Plus Calc, Руководство пользователя

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TI-83 Plus Inferential Statistics and Distributions 400
Calculated results:
, ,
Drawn results:
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
)