## Question

###### Problem 1 Zinfandel is a popular red wine varietal produced almost exelusively in Cali fornia. It...

Problem 1 Zinfandel is a popular red wine varietal produced almost exelusively in Cali fornia. It is rather controversial among wine connoisseurs beea use its alcohol content varies quite substantially from one producer to anot her To study the alcohol content of Anfandel, in May 2013, 10 producers were ra ndomly selen, ted, and below are their akohol content (%): 4.8 14.5 16.1 14.2 15.9 137 162 14.6 13.8 15.0 )point) What is the population in this study? 2)(1 point) What is the sample in this study? (3) (2 points) What is the va riable of intest in this study? Is it discrete or continuous? 4) (4 points) Draw a boxplot of the va riable of interest Problem 2 Poly(3-hydroxybutyrate) (PHB),a semierystalline polymer that is fuly biodegrad able and biocompatible, is obtained from renewa ble resources. From a sus tainability perspective, PHB offers many attactive properties though it is more expensi ve to produce than standard plastics. The following data con tains the melting point (C) values for 12 specimens of the polymer 80,5 181.7 180.9 1816 182.6 181.6 81.3 182.1 1821 180.3 181.7 1805 1) (5 points) Give the five number summary of the data 2) (2 points) Calculate the sample mean 3) (4 points) Caleulate the sample standard deviation

## Answers

1.

a) Population Zinfandel Red wine in California.

b) 10 Sample of Zinfandel Red wine.

c) Variable -- Alcohol contained in Zinfandel Red wine.

d) R-code

> y<-c(14.8,14.5,16.1,14.2,15.9,13.7,16.2,14.6,13.8,15)

> summary(y)

Min. 1st Qu. Median Mean 3rd Qu. Max.

13.70 14.28 14.70 14.88 15.68 16.20

> boxplot(y)

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