• • S6.39 In order to monitor the allocation of patrol cars and other police resources, the local police chief, Timothy Kraft, collects data on the incidence of crime by city sector. The city is divided into ten sectors of 1000 residents each. The number of crime incidents reported last month in each sector is as follows:

Construct a p-chart that plots the rate of crime by sector. Set the control limits to include 99.73 percent of the random variation in crime. Is the crime rate in any sector out of control? Do you have any suggestions for the reallocation of police resources?

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SECTOR 1 2 3 4 5 6 7 8 9 10 CRIME INCIDENCE 6 25 5 11 20 17 10 22 7 33