Hypothesis Tests; One-Sample Z-Test - HP 40gs User Manual

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Hypothesis tests

You use hypothesis tests to test the validity of hypotheses

that relate to the statistical parameters of one or two

populations. The tests are based on statistics of samples

of the populations.

The HP 40gs hypothesis tests use the Normal

Z-distribution or Student's t-distribution to calculate

probabilities.

On the basis of statistics from a single sample, the

One-Sample Z-Test measures the strength of the evidence

for a selected hypothesis against the null hypothesis. The

null hypothesis is that the population mean equals a

specified value Η

You select one of the following alternative hypotheses

against which to test the null hypothesis:

The inputs are:

Sample mean.

Sample size.

Hypothetical population mean.

Population standard deviation.

Significance level.

Inference aplet

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