HP 39gs Two-Sample Z-Interval

Results	The results are:
	Result	Description
	Critical Z	Critical value for Z.
	μ min	Lower bound for μ.
	μ max	Upper bound for μ.

Two-Sample Z-Interval

Menu name	Z-INT: μ1– μ2
	This option uses the Normal Z-distribution to calculate a
	confidence interval for the difference between the means
	of two populations, μ1– μ2, when the population standard
	deviations, σ1 and σ2, are known.
Inputs	The inputs are:
	Field	Definition
	name
	x1	Sample 1 mean.
	x2	Sample 2 mean.
	n1	Sample 1 size.
	n2	Sample 2 size.
	σ1	Population 1 standard deviation.
	σ2	Population 2 standard deviation.
	C	Confidence level.
Results	The results are:
	Result	Description
	Critical Z	Critical value for Z.
	μ Min	Lower bound for μ1 – μ2.
	μ Max	Upper bound for μ1 – μ2.

11-16 Inference aplet