HP NW280AAABA Manual de usuario descargar pdf (Pagina 377)

100

101

Functions and commands 371

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(x

,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( ,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( , , s

,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…)}

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HP NW280AAABA Manual de usuario Pagina 377

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