HP 50g User Manual page 612

Then, we reject H : = , against H : . The test z value is z =
0 1 0
-8
5.656854. The P-value is 1.54 10 . The critical values of z =
/2
1.959964, corresponding to critical x range of {147.2 152.8}.
This information can be observed graphically by pressing the soft-menu key
@GRAPH:
Example 2 -- For = 150, x = 158, s = 10, n = 50, for = 0.05, test the
0
hypothesis H : = , against the alternative hypothesis, H : > . The
0 0 1 0
population standard deviation, , is not known.
Press ‚Ù—— @@@OK@@@ to access the hypothesis testing feature in the
calculator. Press ——@@@OK@@@ to select option 5. T-Test: 1 .:
Enter the following data and press @@@OK@@@:
> 150, and press @@@OK@@@. The result is:
Select the alternative hypothesis, H :
1
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