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2. Suppose § is an unbiased OLS estimator of parameter B, and the t-statistic t = 878~t(m), where m is the degrees of freedom

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to B-13 -ntem) Se (B) 95% confidence internal 5 p[rtis ** )=0.95 p[-t st[+]=0.95 p[-+ C Boli sti]=0.95 p[-t.s.e(B) < B-B 5 tu1 p [-t.S.e(B) { Ê - B Ś Łse.(R)] = 0.95 PHAB P[-t?sec8) + B-B Ł*se (B)]=0.95 - (multiply by al) PL Å - tt se (B) e B S Å aso, 95% confidence internal for ß is fß - tise (B), Êt secß) ) ie ß & ti se (6) where t* is and secß) is the table value at 9

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