Texas Instruments TI-82 STATS Manual Book page 253

2.PropZTest
Input:
Calculated results:
Drawn results:
(two-proportion z test; item
2.PropZTest
compare the proportion of successes (p
populations. It takes as input the count of successes in each
sample (x and x ) and the count of observations in each sample
1 2
(n and n ).
2.PropZTest
1 2
(using the pooled sample proportion Ç) against one of the
alternatives below.
H : p (
p1:ƒp2
ƒp
a 1 2
H : p <p (
p1:<p2
a 1 2
H : p >p (
p1:>p2
a 1 2
,
,
Inferential Statistics and Distributions 13–15
1
tests the null hypothesis H
)
)
)
) computes a test to
6
and p ) from two
2
: p =p
0 1 2