HP F2226A - 48GII Graphic Calculator User Manual page 615

Try the following exercises:
Example 1 – For µ = 150, σ = 10, x = 158, n = 50, for α = 0.05, test the
0
: µ = µ
hypothesis H , against the alternative hypothesis, H
0 0
Press ‚Ù—— @@@OK@@@ to access the hypothesis testing feature in the
calculator. Press @@@OK@@@ to select option 1. Z-Test: 1 µ.
Enter the following data and press @@@OK@@@:
You are then asked to select the alternative hypothesis. Select µ ≠150, and
press @@OK@@. The result is:
: µ = 150, against H
Then, we reject H
0
5.656854. The P-value is 1.54×10
±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:
: µ ≠ µ
1
: µ ≠ 150. The test z value is z
1
-8 The critical values of ±z
.
.
0
=
0
=
α
/2
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