Texas Instruments TI-Nspire CAS User Manual

188 Alphabetical Listing
tTest
Catalog >
tTest μ0,List[,Freq[,Hypoth]]
(Data list input)
tTest μ0,v,sx,n,[Hypoth]
(Summary stats input)
Performs a hypothesis test for a single
unknown population mean μ when the
population standard deviation σ is unknown.
A summary of results is stored in the
stat.results variable. (See page 172.)
Test H
0
: μ = μ0, against one of the
following:
For H
a
: μ < μ0, set Hypoth<0
For H
a
: μ ≠ μ0 (default), set Hypoth=0
For H
a
: μ > μ0, set Hypoth>0
For information on the effect of empty
elements in a list, see “Empty (Void)
Elements,” page 232.
Output variable Description
stat.t
(v − μ0) / (stdev / sqrt(n))
stat.PVal Smallest level of significance at whichthe null hypothesis can be rejected
stat.df Degrees of freedom
stat.v
Sample mean of the data sequence inList
stat.sx Sample standard deviation of the data sequence
stat.n Size of the sample
tTest_2Samp
Catalog >
tTest_2Samp List1,List2[,Freq1[,Freq2
[,Hypoth[,Pooled]]]]
(Data list input)
tTest_2Samp v1,sx1,n1,v2,sx2,n2[,Hypoth
[,Pooled]]
(Summary stats input)

Texas Instruments TI-Nspire CAS Specifications

General

Type	Graphing
Cover	-
Form factor	Pocket
Control type	Buttons, Touch
Product color	Grey, Silver
Digits	- digits
Display tilting	No
Display resolution	320 x 240 pixels
Display number of lines	- lines
Compatible operating systems	Windows XP/2000\\r Mac OS X 10.4/10.5
Battery type	AAA
Power source	Battery
Number of batteries supported	4
USB port	Yes
USB 2.0 ports quantity	1
RAM capacity	16 MB
ROM capacity	20 MB

Weight and Dimensions

Depth	198.3 mm
Width	100 mm
Height	28.7 mm