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The following table presents the annual person-hours of time lost due to traffic congestion for a group of cities for 2009. This statistic is a measure of traffic congestion. City Annual Person-Hours Lost to traffic Congestion Baltimore 33 Boston 28 Buffalo 11 Chicago 44 Cleveland 13 Dallas 32 Detroit 23 Houston 37 Kansas City 14 Los Angeles 40 Miami 26 Minneapolis 27 New Orleans 20 New York 24 Philadelphia 26 Phoenix 23 Pittsburgh 23 San Antonio 19 San Diego 23 San Francisco 30 27 Seattle Washington, D.C. 41 Source: U.S. Bureau of the Census. 2012. Statistical Abstract of the United States: 2012. Table 1099. Available at http://www.census.gov/prod/2011pubs/12statab/trans.pdf

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Essentials Of Statistics

4th Edition
HEALEY + 1 other
Publisher: Cengage Learning,
ISBN: 9781305093836
BuyFind

Essentials Of Statistics

4th Edition
HEALEY + 1 other
Publisher: Cengage Learning,
ISBN: 9781305093836

Solutions

Chapter
Section
Chapter 3, Problem 3.4P
Textbook Problem
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The following table presents the annual person-hours of time lost due to traffic congestion for a group of cities for 2009. This statistic is a measure of traffic congestion.

City Annual Person-Hours
Lost to traffic Congestion
Baltimore 33
Boston 28
Buffalo 11
Chicago 44
Cleveland 13
Dallas 32
Detroit 23
Houston 37
Kansas City 14
Los Angeles 40
Miami 26
Minneapolis 27
New Orleans 20
New York 24
Philadelphia 26
Phoenix 23
Pittsburgh 23
San Antonio 19
San Diego 23
San Francisco 30
27
Seattle
Washington, D.C. 41

Source: U.S. Bureau of the Census. 2012. Statistical Abstract of the United States: 2012. Table 1099. Available at http://www.census.gov/prod/2011pubs/12statab/trans.pdf

Expert Solution
To determine

a.

To Calculate:

The mean and median of the distribution.

Explanation of Solution

The formula to calculate mean is given by,

X¯=i=1NXiN

The mean is given by,

X¯=i=1NXiN

Substitute 22 for N, 33 for X1, 28 for X2 and so on in the above mentioned formula,

X¯=33+28+...+27+4122=58422=26

Expert Solution
To determine

b.

To Compare:

The mean and median.

Expert Solution
To determine

c.

To Calculate:

The mean and median of the distribution after removing the data of the city Chicago.

Expert Solution
To determine

d.

To Report:

The mean and median in a research format

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