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Chapter 13: Inferential Statistics and Distributions 231
2-SampTInt
2-SampTInt (two-sample t confidence interval; item 0) computes a confidence interval for the
difference between two population means (m
1
Nm
2
) when both population standard deviations (s
1
and s
2
) are unknown. The computed confidence interval depends on the user-specified
confidence level.
In the example:
SAMP1={12.207, 16.869, 25.05, 22.429, 8.456, 10.589}
SAMP2={11.074, 9.686, 12.064, 9.351, 8.182, 6.642}
Data Stats
Input:
Calculated
results:
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