TI-89 / TI-92 Plus / Voyage™ 200 PLT Statistics with List Editor App ˆ Tests Menu 154
1-PropZTest
Description
2 ˆ (
Tests) Æ 5:1.PropZTest for the TI-89
ˆ (Tests) Æ 5:1.PropZTest for the TI-92 Plus / Voyage™ 200 PLT
1.PropZTest (one-proportion z test) computes a test for an unknown proportion of
successes (prop).
1.PropZTest tests the null hypothesis H
0
: p=p
0
against one of the
alternatives below.
¦ H
a
: pƒp
0
¦ H
a
0
¦ H
a
: p>p
0
Inputs
p0 The hypothesized population proportion for 1.PropZTest. Must be a real
number, such that 0 < p
0
< 1.
Successes, x Count of successes in the sample for the 1.PropZTest. Must be an
integer ‚ 0.
n Count of observations in the sample for the 1.PropZTest. Must be an
integer > 0.
Alternate Hyp
(pπ
ππ
πp0, p<
<<
< p0, p>
>>
>p0)
Three alternate hypotheses against which the null hypothesis (H
0
: p=p
0
)
may be tested.
Results
(Calculate or Draw)
Calculate: Display numerical and symbolic test results in a dialog box.
Draw: Draw a graph of the test results.
Outputs
Outputs Stored to Description
p0 p0 Hypothesized population proportion.
z z Standard normal value computed for the proportion.
P Value pval Least probability at which the null hypothesis can be rejected.
p_hat p_hat Estimated sample proportion.
n n Size of the sample.
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