HP 40G One–Sample T–Test

Results	The results are:
	Result	Description
	Test P1–P2	Difference between the
		proportions of successes in the
		two samples.
	Test Z	Z–Test statistic.
	Prob	Probability associated with the
		Z–Test statistic.
	Critical Z	Boundary values of Z associated
		with the α level that you supplied.

One–Sample T–Test

Menu name	T–Test: 1 ∝
	The One–sample T–Test is used when the population standard
	deviation is not known. On the basis of statistics from a single
	sample, this test measures the strength of the evidence for a
	selected hypothesis against the null hypothesis. The null
	hypothesis is that the sample mean has some assumed value,
	Η0 :∝ = ∝0
	You select one of the following alternative hypotheses against
	which to test the null hypothesis:)
		H1:∝ < ∝0
		H1:∝ > ∝0
		H1:∝ ≠ ∝0
Inputs	The inputs are:
	Field name	Definition
	x	Sample mean.
	Sx	Sample standard deviation.
	n	Sample size.
	∝0	Hypothetical population mean.
	α	Significance level.

Inference aplet 9-13