Operation Manual

Chapter 13: Inferential Statistics and Distributions 229
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- Te s t
T- Te st (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}
Calculated
results:
Drawn
results:
Data Stats
Input:
Data Stats