Operation Manual
TI-83 Plus Inferential Statistics and Distributions 397
Data Stats
Calculated results:
,,
Drawn results:
Note:
All
STAT TESTS
examples assume a fixed-decimal mode setting of
4
(Chapter 1). If you set the decimal mode to
Float
or a different fixed-decimal
setting, your output may differ from the output in the examples.
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
)