Inference aplet
9-17
One-Proportion Z-Interval
Menu name
Z-INT: 1
π
This option uses the Normal Z-distribution to calculate a
confidence interval for the proportion of successes in a
population for the case in which a sample of size,
n
, has
a number of successes,
x
.
Inputs
The inputs are:
Results
The results are:
Two-Proportion Z-Interval
Menu name
Z-INT:
π
1 –
π
2
This option uses the Normal Z-distribution to calculate a
confidence interval for the difference between the
proportions of successes in two populations.
Inputs
The inputs are:
Field
name
Definition
x
Sample success count.
n
Sample size.
C
Confidence level.
Result
Description
Critical Z
Critical value for Z.
π
Min
Lower bound for
π
.
π
Max
Upper bound for
π
.
Field
name
Definition
Sample 1 success count.
Sample 2 success count.
x1
x2
Содержание 39g+
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