The production of wine is a multibillion-dollar worldwide industry. In an attempt to develop a model of wine quality as

[answerhappygod]

The Production Of Wine Is A Multibillion Dollar Worldwide Industry In An Attempt To Develop A Model Of Wine Quality As 1 (72.16 KiB) Viewed 23 times

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. Click the icon to view the data of wine quality and alcohol content a. Construct a scattor plot Choose the correct graph below. ОА OB Oc. OD 10+ 401 3 ka 2 31: Q Q 10 40 Alcool Content() Alcohol Content 1987 Alcohol Content Alchol Content b. For these data, bo-5.8 and = 0.2. Interpret the meaning of the slope, by, 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. OB. The slope, by, implies that for each increase of alcohol percentage of 1.0, the wine quality rating is expected to increase by the value of by OC. The slope, by, implies that for each 0 2 percentage decrease in alcohol content, the wine should have an increase in its rating by 1. OD. The slope, by, implies that for each increase of 1 wine quality rating, the alcohol content is expected to increase by the value of by, in percentages. c. Predict the mean wine quality for wines with an 11% alcohol content. (Round to two decimal places needed.)

Wine Quality Rating 1 OVO U AWNA 2 3 4 5 6 Alcohol Content (%) 10.5 11.3 10.9 12.4 12.2 12.3 13.0 12.8 12.9 13.7 14.0 14.3 O O OOOO O NOON 0 7 8 9 10 11 12 9 8 7 7 8 9 7 9 8 7 8

d. What conclusion can you reach based on the results of (a)-(c)? A. 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 5.8. B. 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 0.2. 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 5.8. 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 0.2.