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TI-83 Plus Inferential Statistics and Distributions 411
2
.
PropZInt
2
.
PropZInt
(two-proportion
z
confidence interval; item
B
) computes a
confidence interval for the difference between the proportion of
successes in two populations (p
1
N
p
2
). 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
). The computed confidence interval depends on
the user-specified confidence level.
Input:
,
Calculated results: