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

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TI-83 Plus Inferential Statistics and Distributions 399
2
.
SampZTest
2 . SampZTest
(two-sample
z
test; item
3
) tests the equality of the means of
two populations (
m
1
and
m
2
) based on independent samples when both
population standard deviations (
s
1
and
s
2
) are 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:
LISTA={154 109 137 115 140}
LISTB={108 115 126 92 146}
Data Stats
Input:
, ,