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1. Enter the above data in to lists L1 and L2.
2. Press S E 0
7.
The parameter input screen
will appear.
3. Enter the appropriate value in
each field.
4. Press @ h .
Answers are displayed on the
screen, where the numerical
value within () indicates the
confidence interval for the
differences between µ
when the level of confidence
is 99%.
In the numerical value input
mode, "n
08 Ztest1samp
Tests the hypothesis of population mean µ.
Example
The average weight of a newly developed product is known to be
53.4 g and standard deviation (s) is 4.5. Judge the validity when
the average weight of 20 units is 52.4 g (x).
Set the input method to value input mode
1. Press # S E 1 7 E.
2. Press S E 0
8.
The parameter input screen
will appear.
3. Set the alternate hypothesis
to µ ≠ µ
(two-tail test, one-tail test
settings). In this case, choose
µ ≠ µ
Chapter 8: Statistics & Regression Calculations
and µ
1
", "n
" are positive integers.
1
2
, µ < µ
and µ > µ
0
0
0
(two-tail test).
0
2
173
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