To make:a
Answer to Problem 5E
The result is:
Explanation of Solution
Given:
Airline | Outsource percent | Delay percent |
AirTran | ||
Alaska | ||
American | ||
America West | ||
ATA | ||
Continental | ||
delta | ||
Hawaiian | ||
JetBlue | ||
Northwest | ||
Southwest | ||
United | ||
US Airways |
Calculation:
We put outsource percent (the explanatory variable) on the horizontal axis and delay percent (the response variable) on the vertical axis. Figure
From the scatter plot, we can conclude that there is positive correlation exists between percent of major maintenance outsourced and percent of flight delays blamed on the airline. So, we reject the critics claim and we can conclude that the Airlines have increasingly outsourced the maintenance of their planes to other companies.
Conclusion:
Therefore, the scatterplot is drawn.
Chapter 3 Solutions
The Practice of Statistics for AP - 4th Edition
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