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OpenStudy (anonymous):
Statistics confidence interval. The formula is B-hat1 +- t-alpha/2,df * S-Bhat... I have B-hat1=31, s=3, SS-xx=35 and n=12. According to someone, we are not supposed to divide the alpha in half for a 95% confidence interval. Why not??
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OpenStudy (anonymous):
We're always supposed to split the alpha in half
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