HP Prime Graphing NW280AAABA manual Two proportions. Returns a list containing in order

ConfZ2prop	The two-sample Normal confidence interval for the difference
	of two proportions. 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
	ConfZ2prop(x1,x2,n1,n2,C)
	Example:
	ConfZ2prop(21, 26, 50, 50, 0.95) returns
	{-1.9599…, -0.2946…, 0.0946…)}
ConfT1mean	The one-sample Student’s T confidence interval for a mean.
	Returns a list containing (in order):
	• The degrees of freedom
	• The lower bound of the confidence interval
	• The upper bound of the confidence interval
	ConfT1mean( x ,s,n,C)
	Example:
	ConfT1mean(0.461368, 0.2776, 50, 0.95) returns
	{49, -.2009…, 0.5402…}

ConfT2mean The two-sample Student’s T confidence interval for the difference of two means. Returns a list containing (in order):

•The degrees of freedom

•The lower bound of the confidence interval

•The upper bound of the confidence interval

ConfT2mean( x1, x2, s1,s2,n1, n2,pooled,C)

Example:

ConfT2mean(0.461368, 0.522851, 0.2887, 0.2887, 50, 50, 0.95,0) returns {98.0000…, -1.9844, - 0.1760…, 0.0531…)}

Functions and commands 371