HP 40gs Manual do Utilizador descarregar pdf (Página 144)

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11-18 Inference aplet

Results The results are:

One-Sample T-Interval

Menu name T-INT: 1 μ

This option uses the Student’s t-distribution to calculate a

confidence interval for m, the true mean of a population,

for the case in which the true population standard

deviation, s, is unknown.

Inputs The inputs are:

n1 Sample 1 size.

n2 Sample 2 size.

C Confidence level.

Field

name

Definition (Continued)

Result Description

Critical Z Critical value for Z.

π Min

Lower bound for the difference between

the proportions of successes.

π Max

Upper bound for the difference between

the proportions of successes.

Field

name

Definition

Sample mean.

Sx Sample standard deviation.

n Sample size.

C Confidence level.

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