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Select µ ≠ 150. Then, press @@@OK@@@. The result is:
Then, we reject H
0
: µ = 150, against H
1
: µ ≠ 150. The test z value is z
0
=
5.656854. The P-value is 1.54×10
-8
. The critical values of ±z
α
/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:
Reference
Additional materials on statistical analysis, including definitions of concepts,
and advanced statistical applications, are available in Chapter 18 in the
user’s guide.