HP Prime Graphing NW280AAABA manual Display the test results Plot the test results

Display the test results

Plot the test results

The Numeric view is where you enter the sample statistics and population parameters for the situation you are examining. The sample data supplied here belong to the case in which a student has generated 50 pseudo-random numbers on his graphing calculator. If the algorithm is working properly, the mean would be near 0.5 and the population standard deviation is known to be approximately 0.2887. The student is concerned that the sample mean (0.461368) seems a bit low and it testing the less than alternative hypothesis against the null hypothesis.

6.Display the test results:

The test distribution value and its associated probability are

displayed, along with the critical value(s) of the test and the associated critical value(s) of the statistic. In this case, the test indicates that one should not reject the null hypothesis.

Tap to return to Numeric view.

7.Display a graphical view of the test results:

P

The graph of the distribution is displayed, with the

test Z-value marked. The corresponding X-value is also shown.

Tap to see the critical Z-value. With the alpha level showing, you can press \or =to decrease or increase the α-level.

242 Inference app