HP Prime Graphing NW280AAABA manual Two-Proportion Z-Test

Results	The results are:
	Result	Description
	Test Z	Z-Test statistic
	Test pˆ	Proportion of successes in the sample
	P	Probability associated with the Z-Test
		statistic
	Critical Z	Boundary value(s) of Z associated
		with the α level that you supplied
	Critical pˆ	Proportion of successes associated
		with the level you supplied

Two-Proportion Z-Test

Menu name	Z-Test: π1– π2
	On the basis of statistics from two samples, each from a
	different population, this test measures the strength of the
	evidence for a selected hypothesis against the null
	hypothesis. The null hypothesis is that the proportions of
	successes in the two populations are equal, Η0: π1 = π2.
	You select one of the following alternative hypotheses
	against which to test the null hypothesis:
		H0: π1 < π2
		H0: π1 > π2
		H0: π1 ≠ π2
Inputs	The inputs are:
	Field name	Definition
	x1	Sample 1 success count
	x2	Sample 2 success count
	n1	Sample 1 size
	n2	Sample 2 size
	α	Significance level

Inference app 249