HP 39gs Confidence intervals, One-Sample Z-Interval

Results	The results are:
	Result	Description
	Test T	T-Test statistic.
	Prob	Probability associated with the T-Test
		statistic.
	Critical T	Boundary values of T associated with
		the α level that you supplied.

Confidence intervals

	The confidence interval calculations that the HP 39gs can
	perform are based on the Normal Z-distribution or
	Student’s t-distribution.
One-Sample Z-Interval
Menu name	Z-INT: μ 1
	This option uses the Normal Z-distribution to calculate a
	confidence interval for m, the true mean of a population,
	when the true population standard deviation, s, is known.
Inputs	The inputs are:
	Field	Definition
	name
	x	Sample mean.
	σ	Population standard deviation.
	n	Sample size.
	C	Confidence level.

Inference aplet 11-15