Texas Instruments TI-84 PLUS SILV Guidebook - Page 235
PropZTest, p1:<p2, Input, Calculated, results, Drawn
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2-PropZTest 2-PropZTest (two-proportion z test; item 6) computes a test to compare the proportion of successes (p1 and p2) from two populations. It takes as input the count of successes in each sample (x1 and x2) and the count of observations in each sample (n1 and n2). 2-PropZTest tests the null hypothesis H0: p1=p2 (using the pooled sample proportion Ç) against one of the alternatives below. • Ha: p1ƒp2 (p1:ƒp2) • Ha: p1p2) Input: Calculated results: Drawn results: Chapter 13: Inferential Statistics and Distributions 228
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Chapter 13: Inferential Statistics and Distributions
228
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
)
Input:
Calculated
results:
Drawn
results: