Hp Prime Graphing Wireless Calculator Instrukcja Użytkownika Pobierz pdf (Strona 165)

100

101

Functions and commands 161

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( ,n,σ

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( , , n

,σ

,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…}

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