Two-Sample Z-Interval - HP 39gII User Manual

Inputs
Results

Two-Sample Z-Interval

Menu name
Inputs
114
The inputs are:
Field Definition
name
Sample mean.
x
Sample size.
n
Population standard deviation.
σ
Confidence level.
C
The results are:
Result Description
Confidence level.
C
Critical Z Critical values for Z.
Lower Lower bound for μ.
Upper Upper bound for μ.
Z-int: μ – μ
1 2
This option uses the Normal Z-distribution to calculate a
confidence interval for the difference between the means
of two populations, μ
deviations, σ and σ
1
The inputs are:
Field Definition
name
Sample 1 mean.
x
1
Sample 2 mean.
x
2
Sample 1 size.
n
1
Sample 2 size.
n
2
– μ , when the population standard
1 2
, are known.
2
Inference app