What percentage of the variability in the number of delivery days for a car is NOT explained by knowing the number of factory options? SUMMARY OUTPUT 0.9034 Regression Statistics Multiple R R Square Adjusted R Square 0.8610 0.8217 Standard Error 4.2790 Observations 10 Coefficients Standard Error 29.73333 2.991435587 Intercept Factory Options 3.284848 0.482113498 86.10% 90.34% 82.17% 4.28% 27 ANA 80 888 74 F5 Ta $ 4 % 5 6 8 7 3 9 0 E R T Y