HP Prime Graphing NW280AAABA manual Symbolic view options, Test μ1 μ2, the T-Test on

Symbolic view options

The table below summarizes the options available in Symbolic view for the two inference methods: hypothesis test and confidence interval.

Hypothesis Test Confidence Interval

Z-Test: 1 μ, the Z- Z-Int: 1 μ, the confidence Test on one mean interval for one mean, based

on the Normal distribution

Z-Test: μ1 – μ2, the Z-Test on the

difference between two means

Z-Test: 1 π, the Z- Test on one proportion

Z-Int: μ1 – μ2, the confidence interval for the difference between two means, based on the Normal distribution

Z-Int: 1 π, the confidence interval for one proportion, based on the Normal distribution

Z-Test: π1– π2, the Z-Test on the

difference between two proportions

T-Test: 1 μ, the T- Test on one mean

T-Test: μ1 – μ2, the T-Test on the

difference between two means

Z-Int: π1– π2, the confidence interval for the difference between two proportions, based on the Normal distribution

T-Int: 1 μ, the confidence interval for one mean, based on the Student’s t-distribution

T-Int: μ1 – μ2, the confidence interval for the difference between two means, based on the Student’s t-distribution

If you choose one of the hypothesis tests, you can choose an alternative hypothesis to test against the null hypothesis. For each test, there are three possible choices for an alternative hypothesis based on a quantitative comparison of two quantities. The null hypothesis is always that the two quantities are equal. Thus, the alternative hypotheses cover the various cases for the two quantities being unequal: <, >, and ≠.

In this section, we will conduct a Z-Test on one mean on the example data to illustrate how the app works.

240 Inference app