Z-test – Texas Instruments TI-84 User Manual
Page 345
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Chapter 13: Inferential Statistics and Distributions
342
The description then shows the unique output screen for that instruction with the
example results.
•
Descriptions of instructions that offer the
Calculate/Draw
output choice show both
types of screens: calculated and graphic results.
•
Descriptions of instructions that offer only the
Calculate
output choice show the
calculated results on the home screen.
Z-Test
Z-Test
Z-Test
Z-Test
Z-Test
(one-sample
z
test; item
1
) performs a hypothesis test for a single unknown
population mean
m when the population standard deviation s is known. It tests the null
hypothesis H
0
:
m=m
0
against one of the alternatives below.
•
H
a
:
mƒm
0
(
m
:
ƒm
0
)
•
H
a
:
m<m
0
(
m
:<
m
0
)
•
H
a
:
m>m
0
(
m
:>
m
0
)
In the example:
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