Chapter 11. Section 11.1 – Inference for the Mean of a Population. Inference for the Mean of a Population.
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Section 11.1 – Inference for the Mean of a Population
t(n– 1) distribution, the P-value for a
test of Ho against
Ha:μ > μo is P( T ≥ t)
Ha:μ < μo is P( T ≤ t)
Ha:μ≠ μo is 2P( T ≥|t|)
Minitab stemplot of the
data (page 623)
The one-sample t confidence interval has the form:
(where SE stands for “standard error”)