Chapter 13: Inferential Statistics and Distributions
224
T-Test
T-Test
(one-sample
t
test; item
2
) performs a hypothesis test for a single unknown population mean
m
when the population standard deviation
s
is unknown. 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:
TEST={91.9, 97.8, 111.4, 122.3, 105.4, 95}
Data
Stats
Input:
Calculated
results:
Drawn
results:
