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Unformatted text preview: * * 4 reg y x * one unit increase in x leads to 4.12 unit increase in y * no: std error is small, t-stat large, p-value small, and confidence interval does not include 0 test x=4 * yes: p-value large, and confidence interval includes 4 * * 5 * beta1_hat is just a realization of beta1 * no * ideally, we want to reject any H0 which is different from beta1=4 * however, this is not possible because of sampling errors and finite sample sizes...
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- Spring '08