13–14 Inferential Statistics and Distributions
8250FC~1.DOC TI-83 international English Bob Fedorisko Revised: 10/26/05 1:39 PM Printed: 10/27/05 2:57
PM Page 14 of 36
1.PropZTest (one-proportion z test; item 5) computes a test for
an unknown proportion of successes (prop). It takes as input the
count of successes in the sample x and the count of observations
in the sample n.
1.PropZTest tests the null hypothesis
H
0
: prop=p
0
against one of the alternatives below.
• H
a
: propƒp
0
(prop:ƒp0)
• H
a
: prop<p
0
(prop:<p0)
• H
a
: prop>p
0
(prop:>p0)
Input:
,
Calculated results:
,
Drawn results:
STAT TESTS Menu (continued)
1.PropZTest
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