Intro to Stat_Part_53

Intro to Stat_Part_53 - 173 Major Arts Humanities...

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173 Major Men - Expected Major Men - Actual Major 11.0% 600 Biological Sciences 6.7% 330 Business 22.7% 1130 Education 5.8% 305 Engineering 15.6% 800 Physical Sciences 3.6% 175 Professional 9.3% 460 Social Sciences 7.6% 370 Technical 1.8% 90 Other 8.2% 400 Undecided 6.6% 340 Table 11.7 Exercise 11.9 (Solution on p. 182.) A recent debate about where in the United States skiers believe the skiing is best prompted the following survey. Test to see if the best ski area is independent of the level of the skier. U.S. Ski Area Beginner Intermediate Advanced Tahoe 20 30 40 Utah 10 30 60 Colorado 10 40 50 Table 11.8 Exercise 11.10 Car manufacturers are interested in whether there is a relationship between the size of car an individual drives and the number of people in the driver’s family (that is, whether car size and family size are independent). To test this, suppose that 800 car owners were randomly surveyed with the following results. Conduct a test for independence. Family Size Mid-size Full-size 1 20 35 40 35 2 20 50 70 80 3 - 4 20 50 100 90 5+ 20 30 70 70 Table 11.9 Exercise 11.11 (Solution on p. 182.) College students may be interested in whether or not their majors have any effect on starting
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This document was uploaded on 10/31/2011 for the course STA 2023 at University of Florida.

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Intro to Stat_Part_53 - 173 Major Arts Humanities...

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