
Concept explainers
In Problems 9-14,
(a) Draw a
(b) Find
(c) Find the sample
Focus Problem: Changing Population and Crime Rate Let x be a random variable representing percentage change in neighborhood population in the past lew years, and let y be a random variable representing crime rate (crimes per 1000 population). A random sample of six Denver neighborhoods gave the following information (Source: Neighborhood Facts. The Piton Foundation).
X | 29 | 2 | 11 | 17 | 7 | 6 |
y | 173 | 35 | 132 | 127 | 69 | 53 |
Complete parts (a) through (c), given
(d) For a neighborhood with x = 12 change in population in the past few years, predict the change in the crime rale (per 1000 residents).

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Chapter 4 Solutions
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