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QUESTION
95% CI()=[1.21 : 1.75]. Z What assumptions about the data are made by the theory underlying t-tests and confidence intervals for a population mean ?
95% CI()=[1.21 : 1.75]. Z What assumptions about the data are made by the theory underlying t-tests and confidence intervals for a population mean ? (data are from distribution close to Normal) z When we say that a t-confidence interval for Is robust against some particular form of non-Normality, what do we mean by robust?
