Question

Please answer both questions

9. (1.36) Burning fuels in power plants and motor vehicles emits carbon dioxide (CO2),which contributes to global warming. Table below displays the 2009 CO2 emissions per person from countries with populations of at least 30 million in that year. ANNUAL CARBON DIOXIDE EMISSIONS IN 2009 (METRIC TONS PER PERSON) COUNTRY Co2 COUNTRY Co2 COUNTRY Co2 7.8147 3.4740 1.9029 Argentina 8.2319 Russia 11.0048 4.3611 Bangladesh 0.3471 South Africa 10.0302 1.8999 6.6530 6.3156 15.2615 8.7011 0.3130 Tanzania 0.1464 Korea, South 3.9548 Colombia 1.5602 Thailand 0.4932 Turkey 3.9831 3.8672 1.5431 Uganda 0.1075 0.0972 0.2330 Myanmar 0.4546 United Kingdom 7.6977 5.8188 Nigeria 8.9145 Germany Pakistan 0.9456 United States Philippines 0.7475 Vietnam 1.6370 1.6389 (a) Make a stemplot to display the data of the table. The data will first need to be rounded to the nearest tenth, and use whole numbers as stems (Do not enter space between digits) 10 12 13 14 15 16 17 (b) The distribution is Roughly symmetric O Left-skewed Right-skewed (c) The center of this distribution is about The distribution varies from to 10. (1.37) Every year hundreds of thousands of northern fur seals return to their haulouts in the Pribilof Islands in Alaska to breed, give birth, and teach their pups to swim, hunt, and survive in the Bering Sea. U.S. commercial fur sealing operations continued on St. Paul until 1984, but despite a reduction in harvest, the population of fur seals has continued to decline. Possible reasons include climate shifts in the North Pacific, changes in the availability of prey, and new or increased interaction with commercial fisheries that increase mortality. Here are data on the estimated number of fur seal pups bom on St. Paul Island (in thousands) from 1979 to 2010, where a dash indicates a year in which no data were collected PUPS BORN PUPS BORN 9 YEAR THOUSANDs) YEAR (THOUSANDS) 1979 245.93 1996 170.12 1980 203.82 1997 1981 179.44 1998 179.15 203.58 1982 1999 1983 165.94 158.74 173.27 1984 2001 1985 182.26 145.72 1986 2003 167.66 1987 171.61 122.82 1988 171.53 109.96 1990 201.30 2007 1991 102.67 1992 182.44 2009 94.50 1993 2010 192.10 2011 1994 1995 96.83 2012 (a) Make a stemplot to display the data of the table. (Do not enter space between digits) (b) The distribution is O Left-skewed O Right-skewed Roughly symmetric (c) The center of this distribution is about The distribution varies from to

Answer 1

9.

a. The stem and leaf diagram is

0 11123334579

1 566699

2 7

3 5599

4 04

5 78

6 037

7 78

8 279

9

10 06

11 0

12

13

14

15 3

16

17 2

b. The distribution is

Right-skewed

c. The center of the distribution is about 3.7

The distribution varies from 0.1 to 17.2

.

10.

a. A stem and leaf display is

0 99

1 0124566777777889

2 00004

b. The distribution is

Roughly symmetric

c. The center of this distribution is about 170

The distribution varies from 94 to 246