High-resolution images of lapetus, one of Saturn’s largest moons, were recently obtained by the Cassini spacecraft and analyzed by NASA (Science, Feb. 25, 2005). Using wideband filters, the ratios of ultraviolet to green and infrared to green wavelengths were measured at 24 moon locations. These color ratios are listed in the table below. According to the researchers, “the data’s linear trend suggests mixing of two end members: Cassini Regio with a red spectrum and the south polar region with a flat spectrum.” Conduct a complete simple linear regression analysis of the data, including a residual analysis. Do the results support the researchers’ statement?

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SATMOON Region IR/Green UV/Green Region IR/Green UV/Green Cassini Regio 1.52 0.64 Bright Terrain 1.13 0.79 1.51 0.65 1.20 0.80 1.54 0.65 1.22 0.80 1.53 0.66 1.19 0.81 Transition Zone 1.44 0.66 1.21 0.82 1.42 0.69 1.16 0.83 1.42 0.70 1.14 0.88 1.28 0.73 1.13 0.89 1.40 0.75 South Pole 1.02 0.94 1.24 0.75 0.98 0.95 1.32 0.77 1.01 0.99 1.26 0.77 1.00 1.00