The Daytona 500 is a 500-mile automobile race held annually at the Daytona International Speedway in Daytona Beach, Florida. The following crosstabulation shows the automobile make by average speed of the 25 winners from 1988 to 2012 (The 2013 World Almanac).Average Speed in Miles per HourMake130–139.9140–149.9150–159.9160–169.9170–179.9TotalBuick1 1Chevrolet3543116Dodge 2 2Ford2121 6Total6864125Answer questions 1 - 2. 1.Compute the row percentages. 2.Compute the column percentages.

Answered: The Daytona 500 is a 500-mile…

Advanced Engineering Mathematics

10th Edition

ISBN:9780470458365

Author:Erwin Kreyszig

Publisher:Erwin Kreyszig

Chapter2: Second-order Linear Odes

Section: Chapter Questions

Problem 1RQ

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Question

The Daytona 500 is a 500-mile automobile race held annually at the Daytona International Speedway in Daytona Beach, Florida. The following crosstabulation shows the automobile make by average speed of the 25 winners from 1988 to 2012 (The 2013 World Almanac).

Average Speed in Miles per Hour
Make	130–139.9	140–149.9	150–159.9	160–169.9	170–179.9	Total
Buick	1					1
Chevrolet	3	5	4	3	1	16
Dodge		2				2
Ford	2	1	2	1		6
Total	6	8	6	4	1	25

Answer questions 1 - 2.

1.Compute the row percentages.

2.Compute the column percentages.

Expert Solution

Step 1

1. Compute the row percentages :

dividing each cell with row total:

Average Speed in Miles per Hour
Make	130–139.9	140–149.9	150–159.9	160–169.9	170–179.9	Total
Buick	$\frac{1}{1} \times 100 = 100 %$					100 %
Chevrolet	$\frac{3}{16} \times 100 = 18.75 %$	$\frac{5}{16} \times 100 = 31.25 %$	$\frac{4}{16} \times 100 = 25 %$	$\frac{3}{16} \times 100 = 18.75 %$	$\frac{1}{16} \times 100 = 6.25 %$	100 %
Dodge		$\frac{2}{2} \times 100 = 100 %$				100 %
Ford	$\frac{2}{6} \times 100 = 33.33 %$	$\frac{1}{6} \times 100 = 16.67 %$	$\frac{2}{6} \times 100 = 33.33 %$	$\frac{1}{6} \times 100 = 16.67 %$		100 %