A least-squares multiple linear regression model was fit for 20 observations taken from mothers that were between 32 and 40 weeks pregnant. The model predicted infant birth weight (in pounds) from gestational age (weeks) and estriol level (measured just before birth from the mother's urine). The resulting regression equation is given by y = 4.18 + 0.04gestage + 0.159Testrial. The t-statistics for each parameter in the model are summarized in the table below. Which of the following are accurate statements based on (only) these results? Assume a significance level of 0.05. (Select all that apply) Estimate SE t Pr(> It1) Intercept 4.18 0.88 4.75