HP Prime Graphing NW280AAABA manual ConfZ1mean, ConfZ2mean, ConfZ1prop

ConfZ1mean	The one-sample Normal confidence interval for a mean.
	Returns a list containing (in order):
	• The lower critical Z-value
	• The lower bound of the confidence interval
	• The upper bound of the confidence interval
	ConfZ1mean( x ,n,σ, C)
	Example:
	ConfZ1mean(0.461368, 50, 0.2887, 0.95) returns {-
	1.9599…, 0.3813…,	0.5413…}
ConfZ2mean	The two-sample Normal confidence interval for the difference
	of two means. Returns a list containing (in order):
	• The lower critical Z-value
	• The lower bound of the confidence interval
	• The upper bound of the confidence interval
	ConfZ2mean( x1, x2, n1, n2,σ1,σ2,C)
	Example:
	ConfZ2mean(0.461368, 0.522851, 50, 50, 0.2887,
	0.2887, 0.95) returns {-1.9599…,
	-0.1746…, 0.0516…)}
ConfZ1prop	The one-sample Normal confidence interval for a proportion.
	Returns a list containing (in order):

• The lower critical Z-value

• The lower bound of the confidence interval

• The upper bound of the confidence interval ConfZ1prop(x,n,C)

Example:

ConfZ1prop(21, 50, 0.95) returns {-1.9599…, 0.2831…, 0.5568…}

370 Functions and commands