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13-14 Inferential Statistics and Distributions
8313INFE.DOC TI-83 international English Bob Fedorisko Revised: 02/19/01 12:47 PM Printed: 02/19/01 1:38 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
: prop
ƒ
p
0
(prop:
ƒ
p
0
)
•
H
a
: prop<p
0
(prop:<p
0
)
•
H
a
: prop>p
0
(prop:>p
0
)
Input:
,
Calculated results:
,
Drawn results:
)
1-PropZTest