CoursHeroTranscribedText: nificance level .05. 27. The following data on y = glucose concentration (g/L) and x = fermentation time (days) for a particular blend of malt liquor was read from a scatterplot in the article "Improving Fermentation Productivity with Reverse Osmosis" (Food Tech., 1984: 92-96): x 2 3 4 5 6 7 8 y | 74 54 52 51 52 53 58 71 a. Verify that a scatterplot of the data is consistent with the choice of a quadratic regression model. b. The estimated quadratic regression equation is y = 84.482 - 15.875x + 1.7679x2. Predict the value of glucose concentration for a fermentation time of 6 days, and compute the corresponding residual