(solution) 5. The city council of Pine Bluffs is considering increasing the number of police in an effort to…

(solution) 5. The city council of Pine Bluffs is considering increasing the number of police in an effort to…

The city council of Pine Bluffs is considering increasing the number of police in an effort to reduce crime. Before making a final decision, the council asked the chief of police to survey other cities of similar size to determine the relationship between the number of police and the number of crimes reported. The chief gathered the following sample information. City Police Number of Crimes   City Police Number of Crimes Oxford 15 17 Holgate 17 7 Starksville 17 13 Carey 12 21 Danville 25 5 Whistler 11 19 Athens 27 7 Woodville 22 6 a.   Which variable is the dependent variable and which is the independent variable?   Hint: If you were the Chief of Police, which variable would you decide? Which variable is the random variable? b.  Draw a scatter diagram. c.   Determine the correlation coefficient. d.  Interpret the correlation coefficient. Does it surprise you that the correlation  coefficient is negative?