Texas Instruments TI-82 STATS

Inferential Statistics and Distributions 13–11
8250FC~1.DOC TI-83 international English Bob Fedorisko Revised: 10/26/05 1:39 PM Printed: 10/27/05 2:57
PM Page 11 of 36
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:ƒm0)
• H
a
: m<m
0
(m:<m0)
• H
a
: m>m
0
(m:>m0)
In the example:
TEST={91.9 97.8 111.4 122.3 105.4 95}
Data Stats
Input:
,,
Calculated results:
,,
Drawn results:
T.Test