Chapter 13: Inferential Statistics and Distributions 349
1-PropZTest
1-PropZTest1-PropZTest
1-PropZTest
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)
Drawn
results:
Input:
Data Stats
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