Texas Instruments TI-83 PLUS - Manual (Page 400)

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
)