The state and local police departments are trying to analyze

The state and local police departments are trying to analyze

The state and local police departments are trying to analyze crime rates so they can shift their patrols from decreasing-rate areas to areas where rates are increasing. The city and county have been geographically segmented into areas containing 5,000 residences. The police recognize that not all crimes and offenses are reported: people do not want to become involved, consider the among other reasons. Every month, because of this, the police are contacting by phone a random sample of 1,000 of the 5,000 residences for data on crime, (Respondents are guaranteed anonymity.) Here are the data collected for the past 12 months for one area:
MONTH
CRIME INCIDENCE
SAMPLE SIZE
CRIME RATE
January
7
1,000
0.007
February
9
1,000
0.009
March
7
1,000
0.007
April
7
1,000
0.007
May
7
1,000
0.007
June
9
1,000
0.009
July
7
1,000
0.007
August
10
1,000
0.010
September
8
1,000
0.008
October
11
1,000
0.011
November
10
1,000
0.010
December
8
1,000
0.008
Construct a p chart for 95 percent confidence (1.96) and plot each of the month. If the next three month show crime incidences in this area as
January = 10 (out of 1,000 sampled)
February = 12 (out of 1,000 sampled)
March = 11 (out of 1,000 sampled)
What comments can you make regarding the crime rate?

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