The file DomesticBeer contains the percentage alcohol, number of calories per 12 ounces, and number of carbohydrates (in grams) per 12 ounces for 158 of the best-selling domestic beers in the United States. Determine whether each of these variables appears to be approximately normally distributed. Support your decision through the use of appropriate statistics and graphs. (Data extracted from www.Beer100.com, February 3, 2015.)