Extracted text: The production of wine is a multibillion-dollar worldwide industry. In an attempt to develop a model of wine quality as judged by wine experts, data was collected from red wine variants of a certain type of wine. A sample of 12 wines is given. Develop a simple linear regression model to predict wine quality, measured on a scale from 0 (very bad) to 10 (excellent), based on alcohol content (%). Complete parts (a) through (d) below. E Click the icon to view the data of wine quality and alcohol content. a. Construct a scatter plot. Choose the correct graph below. O A. OB. OC. OD. 40- 10- 15- 15- 0- 0- 0- 15 15 10 Alcohol Content (%) Alcohol Content (9%) Alcohol Content (%) Alcohol Content (%) b. For these data, b, = - 1.6 and b, = 0.8. Interpret the meaning of the slope, b,, in this problem. Choose the correct answer below. O A. The slope, b,, implies that the alcohol content is equal to the value of b,, in percentages. O B. The slope, b,, implies that for each increase of alcohol percentage of 1.0, the wine quality rating is expected to increase by the value of b,- O C. The slope, b,, implies that for each 0.8 percentage decrease in alcohol content, the wine should have an increase in its rating by 1. O D. The slope, b,, implies that for each increase of 1 wine quality rating, the alcohol content is expected to increase by the value of b,, in percentages. c. Predict the mean wine quality for wines with an 13% alcohol content. Ý, =O (Round to two decimal places as needed.) d. What conclusion can you reach based on the results of (a)-(c)? O A. Alcohol percentage appears to be affected by the wine quality. Each increase of 1 in quality leads to a mean increase in alcohol of about 0.8. O B. Wine quality appears to be affected by the alcohol percentage. Each increase of 1% in alcohol leads to a mean increase in wine quality of about - 1.6. O C. Alcohol percentage appears to be affected by the wine quality. Each increase of 1 in quality leads to a mean increase in alcohol of about - 1.6. O D. Wine quality appears to be affected by the alcohol percentage. Each increase of 1% in alcohol leads to a mean increase in wine quality of about 0.8. Wine Quality Rating Wine Quality R
Extracted text: Wine Alcohol Content (%) 10.0 Quality Rating 1 6 2 10.8 10.4 6 3 6 4 11.9 8 11.7 8 6 11.8 9 7 12.5 8 8 12.3 9 12.4 9 10 13.2 7 11 13.5 9 12 13.8