Final answer:
If the 95% CI for a beta coefficient in regression spans zero and the intercept is not significantly different from zero, it does not necessarily indicate a problem. The CI spanning zero means there is no statistically significant evidence of a non-zero effect, which could be due to lack of relationship or small sample size.
Step-by-step explanation:
If the 95% confidence interval (CI) for a beta coefficient in regression spans zero, and the intercept of the coefficient is not significantly different from zero, it does not necessarily indicate a problem. In regression analysis, the beta coefficient represents the change in the dependent variable for a one-unit change in the independent variable, while the intercept represents the expected value of the dependent variable when the independent variable is zero. A CI spanning zero means that there is no statistically significant evidence to conclude that the independent variable has a non-zero effect on the dependent variable. This could be due to a lack of real relationship between the variables or a small sample size that fails to detect a true relationship.