improve this answer to a statistics question on whether there is evidence of a significant negative linear associate. The 95% confidence interval for the slope is (-4.163454 -0.3335853) from the R output. Based on this range, which both lower and upper bounds are in the negative range. a negative linear association between the Predictor variable-the percentage change in average price and the explanatory variable-the percentage of overdue mortgage loans is statistically significant because the 95% CI range extents into positive slope values