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

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TI-83 Plus Inferential Statistics and Distributions 403
Calculated results:
,
Drawn results:
2 . PropZTest
2
.
PropZTest
(two-proportion
z
test; item
6
) computes a test to compare
the proportion of successes (p
1
and p
2
) from two populations. It takes as
input the count of successes in each sample (
x
1
and
x
2
) and the count of
observations in each sample (
n
1
and
n
2
).
2 . PropZTest
tests the null
hypothesis H
0
: p
1
=p
2
(using the pooled sample proportion
Ç
) against
one of the alternatives below.
•
H
a
: p
1
ƒ p
2
(
p1: ƒ p2
)
•
H
a
: p
1
<p
2
(
p1:<p2
)
•
H
a
: p
1
>p
2
(
p1:>p2
)