A number of studies have shown lichens (certain plants composed of an alga and a fungus) to be excellent bio-indicators of air pollution. An article gives the following data (read from a graph) on x = NO3- wet deposition (g N/m-) and y = lichen (% dry weight): x 0.05 0.10 0.11 0.12 0.31 0.37 0.42 0.58 0.68 0.68 0.73 0.85 0.92 y 0.48 0.59 0.45 0.47 0.58 0.54 1.07 0.85 0.91 1.05 0.88 1.04 1.75 Predictor Coef Stdev t-ratio Constant 0 . 36046 0 . 10588 3. 40 0 . 006 no3 depo 1. 0091 0 . 1955 5 . 16 0 . 000 s = 0. 2065 R-sq = 70.8$ R-sq(adj ) = 68.1: (a) What are the least square estimates of Bo and B1? (Round your answers to three decimal places.) bo = b1 = (b) Predict lichen N for an NO3 deposition value of 0.5. (Round your answer to three decimal places.) % dry weight (c) What is the estimate of o? (Round your answer to four decimal places.) 8 = % dry weight