In multiple regression,if the confidence interval for a regression parameter β_i includes 0,we cannot reject the two-sided hypothesis that this coefficient is 0.

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When the confidence interval for a regression parameter includes 0, it means that there is no statistically significant evidence to conclude that the parameter is significantly different from 0. Therefore, we cannot reject the null hypothesis that the coefficient is 0.

In Multiple Regression,if the Confidence Interval for a Regression Parameter