HP F2226A - 48GII Graphic Calculator User Manual page 617

Graphing calculator
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: µ −µ = 0, against the alternative hypothesis,
variance, test the hypothesis H
0
: µ −µ < 0.
H
1
Press ‚Ù—— @@@OK@@@ to access the hypothesis testing feature in the
Press —@@@OK@@@ to select option 6. T-Test: µ1−µ2.:
calculator.
Enter the
following data and press @@@OK@@@:
Select the alternative hypothesis µ1< µ2, and press @@@OK@@@. The result is
: µ −µ
Thus, we accept (more accurately, we do not reject) the hypothesis: H
0
= 0, or H
: µ =µ , against the alternative hypothesis H
: µ −µ < 0, or H
:
0
1
1
µ =µ . The test t value is t = -1.341776, with a P-value = 0.09130961, and
critical t is –t = -1.659782. The graphical results are:
These three examples should be enough to understand the operation of the
hypothesis testing pre-programmed feature in the calculator.
Page 18-46

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