Gold is a commodity. Most of the U.S. gold supply is stored at Fort Knox. Also stored at Fort Knox is the gold supply of many foreign countries. What is meant by "the gold standard"? Does the United States have a gold standard today? How much gold does the United States have? Conduct on line research and prepare a brief history of the importance of gold to the U.S. economy .

Many countries, especially those in Europe, have significant gold holdings. But many of these countries also have massive debts. The following data show the total value of gold holdings in billions of U.S. dollars and the debt as a percentage of the gross domestic product for nine countries.

$$\begin{array}{lcc}\text { Country } & \begin{array}{c}\text { Gold } \\ \text { Value } \\ \text{ (\$ billions) }\end{array} & \begin{array}{c}\text { Debt } \\ \text{ (\\\% of GDP) }\end{array} \\ \text { China } & 63 & 17.7 \\ \text { France } & 146 & 81.7 \\ \text { Germany } & 203 & 83.2 \\ \text { Indonesia } & 33 & 69.2 \\ \text { Italy } & 147 & 119.0 \\ \text { Netherlands } & 36 & 63.7 \\ \text { Russia } & 50 & 9.9 \\ \text { Switzerland } & 62 & 55.0 \\ \text { United States } & 487 & 93.2\end{array}$$

a. Develop a scatter diagram for the total value of a country's gold holdings ($ billions) as the independent variable.

Many countries, especially those in Europe, have significant gold holdings. But many of these countries also have massive debts. The following data show the total value of gold holdings in billions of U.S. dollars and the debt as a percentage of the gross domestic product for nine countries.

$$\begin{array}{lcc}\text { Country } & \begin{array}{c}\text { Gold } \\ \text { Value } \\ \text{ (\$ billions) }\end{array} & \begin{array}{c}\text { Debt } \\ \text{ (\\\% of GDP) }\end{array} \\ \text { China } & 63 & 17.7 \\ \text { France } & 146 & 81.7 \\ \text { Germany } & 203 & 83.2 \\ \text { Indonesia } & 33 & 69.2 \\ \text { Italy } & 147 & 119.0 \\ \text { Netherlands } & 36 & 63.7 \\ \text { Russia } & 50 & 9.9 \\ \text { Switzerland } & 62 & 55.0 \\ \text { United States } & 487 & 93.2\end{array}$$

b. What does the scatter diagram developed in the previous part indicate about the relationship between the two variables? Does there appear to be any outliers and/or influential observations? Explain.

A meltwater stream flowing in a tunnel under the glacier deposits a ridge called an esker. The esker often forms a small delta, called a kame, where it emerges from the ice. The diagram above shows an esker at (1) $A$ (2) $B$ (3) $F$ (4) $G$

The Toyota Camry was the top-selling passenger car in the United States in 2007, followed by the Honda Accord. Accord sales were 81 thousand less than Camry sales, and 865 thousand of the two types of cars were sold. How many of each make of car were sold?

At the time these features were formed by an ice sheet, the glacier was most likely the thickest 100 miles to the (1) north (2) south (3) east (4) west

Scratched (striated) and polished bedrock is most likely found under the sediments at

$$\begin{array}{lllll}\text { (1) } E & \text { (2) } B & \text { (3) } D & \text { (4) } G\end{array}$$

Where did the advancing ice move up and over the debris that it was pushing southward? (1) $A$ (2) $D$ (3) $F$ (4) $G$

In some locations, ice blocks were buried within the sediments. These ice blocks melted to make landforms known as kettles. Which letters represent the most likely locations of kettles? (1) $A$ and $B$ (2) $C$ and $D$ (3) $E$ and $F$ (4) $A$ and $G$

Which letter represents a terminal moraine indicating the farthest southern advance of the front of the glacier? (1) $A$ (2) $C$ (3) $F$ (4) $E$

Sediment.s collected at location D are most likely (1) sorted by size and layered (2) sorted by size and not layered (3) unsorted by size and layered (4) unsorted by size and not layered

Used Car Mileage and Price. The Toyota Camry is one of the best-selling cars in North America. The cost of a previously owned Camry depends upon many factors, including the model year, mileage, and condition. To investigate the relationship between the car's mileage and the sales price for a 2007 model year Camry, the following data show the mileage and sale price for 19 sales (PriceHub website).

$$\begin{array}{cr} \text { Miles (1000s) } & \text{ Price (\$1000 } \\ 22 & 16.2 \\ 29 & 16.0 \\ 36 & 13.8 \\ 47 & 11.5 \\ 63 & 12.5 \\ 77 & 12.9 \\ 73 & 11.2 \\ 87 & 13.0 \\ 92 & 11.8 \\ 101 & 10.8 \\ 110 & 8.3 \\ 28 & 12.5 \\ 59 & 11.1 \\ 68 & 15.0 \\ 68 & 12.2 \\ 91 & 13.0 \\ 42 & 15.6 \\ 65 & 12.7 \\ 110 & 8.3 \end{array}$$

d. Test for a significant relationship at the . 05 level of significance.

Solve this problem. The Toyota Camry and the Honda Accord were the top-selling passenger cars in the United States in 2012. Accord sales were 27 thousand less than Camry sales, and 691 thousand of the two cars were sold. What proportion of each car was sold?

Base your answer on the text below. A narrow 160-kilometer-long series of barrier islands stretches from New York City to the eastern tip of Long Island at Montauk Point. These sand islands protect the South Shore from the full force of storms. However, the barrier islands also prevent uninterrupted access to the Atlantic Ocean. The Shinnecock Inlet connects Shinnecock Bay and other sheltered waterways with the ocean. The inlet was formed by the Great Hurricane that stuck Long Island in 1938. This storm permanently broke through a barrier island at Hampton Bays. Since then, dredging has been necessary to keep the Shinnecock Inlet open. Maintenance of the inlet has interrupted the flow of sand along the south shore of Long Island. Efforts to preserve local beaches with jetties and groins have pushed erosion problems farther west resulting in narrower beaches along Long Island's south shore. What would be the most likely result if no further construction or dredging was performed at the Shinnecock Inlet? (1) The inlet would become wider. (2) The inlet would fill in with sand. (3) The position of the inlet would migrate to the east. (4) The inlet would become deeper.