Researchers studying the abundance of sunfish want to investigate factors that contribute to how many fish live in sections of Lake Travis. So they sample different sections of the lake and measure the fish density (number of fish/cubic meter), as well as water temperature ("C), water pH, and whether or not there was a predator present. They ran the following multiple linear regression model with Fish Density as the response variable, confirmed all assumptions, and got the following results: Estimate SE t p-value Intercept 5.73 1.88 3.05