232 Using Lists & Spreadsheet
Stat tests
Supported Statistical tests
The following hypothesis tests are available from the Lists &
Spreadsheets application. For complete information regarding these
functions, refer to the TI-Nspire Reference Guide details for the function
name that is in parentheses.
Z-test (zTest)
Z-Test (one-sample z test) performs a hypothesis test for a single
unknown population mean, m, when the population standard
deviation, s, is known. 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)
This test is used for large populations that are normally distributed. The
standard deviation must be known.
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