1.9. The following data relate biomass production of soybeans to cumu- lative intercepted solar radiation over an eight-week period following emergence. Biomass production is the mean dry weight in grams of independent samples of four plants. (Data courtesy of Virginia Lesser and Dr. Mike Unsworth, North Carolina State University.) X Y Solar Radiation Plant Biomass 29.7 16.6 68.4 49.1 120.7 121.7 217.2 219.6 313.5 375.5 419.1 570.8 535.9 648.2 641.5 755.6 (a) Compute Bo and B₁ for the linear regression of plant biomass on intercepted solar radiation. Write the regression equation. (b) Place 95% confidence intervals on ẞ₁ and ẞo. Interpret the in- tervals.