Zinfandel is a popular red wine varietal produced almost exclusively in California. It is rather controversial among wine connoisseurs because its alcohol content varies quite substantially from one producer to another. In May 2013, the author went to the website klwines.com randomly selected 10 zinfandels from among the

Answer: Step1: The given values of alcohol (%) is 14.8 14.5 16.1 14.2 15.9 13.7 16.2 14.6 13.8 15.0 Step2: a). Here we need to calculate measures of center (mean and median) of the data. X 14.8 14.5 16.1 14.2 15.9 13.7 16.2 14.6 13.8 15 x = 148.8 The formula for mean is given by i Mean x = 148.8 n = 10 = 14.88 Therefore, the mean alcohol content in red wine is 14.88 %. The formula for median is given by For n is odd: th Median = ( n + ) observation. 2 For n is even: Average of ( ) thand (n + 1) th observation. 2 2 The given data is 14.8 14.5 16.1 14.2 15.9 13.7 16.2 14.6 13.8 15.0 Here n = 10, it is even. So the median is the average of 5th and 6th observations. i.e., median = (15.9 + 13.7) 2 = 14.8 Therefore, the median alcohol content in red wine is 14.8 %. Step3:...