HP 49g Graphing Calculator - Manual (Page 177)

Press
OK
to close the inferential statistics application and return to the
default screen. The results are copied to history.
The results for the one-sample Z-test
example data appear in history as shown on
the right.
RfiD KVZ HEK R=
iHOHEJ________
Test z:t-.946205374811)
Prob:.172021922639
Grit Z:(-1.64485362695)
Crit x:.432843347747 Ea$QBi!SE!33iEaBEamBH3
Hypothesis tests
You use hypothesis tests to test the validity of hypotheses that relate to
the statistical parameters of one or two populations. The tests are based
on statistics from samples of the population.
The HP 49G hypothesis tests use the Noraial Z-distribution or Student’s
t-distribution to calculate probabilities.
One-Sample Z-Test
Menu name: Z-Test: 1 p
On the basis of statistics from a single sample, measures the strength of
the evidence for a selected hypothesis against the null hypothesis. The
null hypothesis is that the population mean equals a specified value, pg
You select one of the following alternative hypotheses against which to
test the null hypothesis:
/fi:p
//
2
:
1-1
> ho
//jip^i Po
Inputs
ho
o
X
n
a
Population mean given the null hypothesis.
Population standard deviation.
Sample mean.
Sample size.
Significance level.
Using statistics Page 9-9