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CoursHeroTranscribedText: The state and local police departments are trying to analyze crime rates so they can shift their patrols from decreasingrate areas to areas where
CoursHeroTranscribedText: The state and local police departments are trying to analyze crime rates so they can shift their patrols from decreasingrate areas to areas where rates are increasing. The city and county have been geographically segmented into areas containing 5.250 residences. The police recognize that not all crimes and offenses are reported: people do not 'want to become involved. consider the offenses too small to report. are too embarrassed to make a police report, or do not take the time, among other reasons. Every month, because of this. the police are contacting by phone a random sample of1,050 ofthe 5,250 residences for data on crime. (Respondents are guaranteed anonymity.) Here are the data collected for the past 12 months for one area: CRIME MONTH INCIDENCE SAMPLE SIZE CRIME RATE January 7 1,858 8 February 9 1,858 8 March 7 1,858 8 April 7' 1,959 9 May 7 1,959 9 June 9 1,858 8 July 7 1,959 9 August 18 1,858 8 September 8 1,858 8 October 9 1,858 8 November 14 1,858 8 December 13 1,858 8 9. Determine the P, Sp. UCL and LCL for a chhart of 95 percent confidence [atZ=1.96}. (Round your answers to 5 decimal places} a. Determine the P , Sp. UCL and LCL for a p-chart of 95 percent confidence (at Z = 1.96). (Round your answers to 5 decimal places.) P Sp UCL LCL b. If the next three months show crime incidences in this area as January = 10 (out of 1,050 sampled) February = 12 (out of 1,050 sampled) March = 11 (out of 1,050 sampled) What comments can you make regarding the crime rate? O The process is in control. O The process is out of control
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