TI-83 Plus Inferential Statistics and Distributions 400
Calculated results:
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Drawn results:
2.SampTTest
2.SampTTest (two-sample t test; item 4) tests the equality of the means of
two populations (m1 and m2) based on independent samples when
neither population standard deviation (s1 or s2) is known. The null
hypothesis H0: m1=m2 is tested against one of the alternatives below.
• Ha: m1ƒm2 (m1:ƒm2)
• Ha: m1<m2 (m1:<m2)
• Ha: m1>m2 (m1:>m2)