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...Learning objectives test a hypothesis about regression coefficient form confidence interval around show how the central limit theorem allows econometricians to ignore assumption cr in large samples present results from model hypotheses we propose value of and whether that is plausible based on data have call hypothesized formal statement null h alternative sometimes one sided e g use if only side z statistic b s for any i take difference between our estimate it would under then ii standardize by dividing standard error parameter positive or negative number reject conclude too far come same distribution close zero cannot but what recap properties ols estimator n x has these hold...