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For a random sample of 100 American cities, the linear correlation coefficient between the number of robberies last year and the number of schools in

For a random sample of 100 American cities, the linear correlation coefficient between the number of robberies last year and the number of schools in the city was found to be r = 0.725.

a. What does this imply?

b. Does this suggest that building more schools in a city could lead to more robberies? Why or why not?

c. What is a likely lurking variable?

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