As a result of recent campus safety concerns at Capella University, you have bee
ID: 1190099 • Letter: A
Question
As a result of recent campus safety concerns at Capella University, you have been engaged by campus security team leaders to gather and analyze data about on-campus crime rates in schools in the state of Minnesota. Crime data from 181 Minnesota campuses has been compiled in the Campus Crime Data file. Write a management report for campus security team leaders analyzing and evaluating campus crime data for Minnesota. Include your findings and recommendations for your clients. In your report, be sure to examine the following:
What crimes were most commonly committed on Minnesota campuses between 2009 and 2011? Based on the data, would you say the crime rates decreased or increased from 2009 to 2011?
The campus security leaders believe that the total crime rate in public institutions is more than that in private institutions. They have asked you to test that hypothesis. Describe your results.
Your clients would also like you to develop a 95 percent confidence interval for the difference in total campus crime rates between public and private institutions in Minnesota. Report your results.
What, if any, ethical issues should concern you in conducting your research?
Explanation / Answer
Management report:
The crime data has been collected as below:
Year
Number of crimes
Increase(+) / Decrease (-) from the last year
2009
131
2010
138
(138 – 131 =) +7
2011
143
(143 – 138 =) +5
Most of the crimes are based on group violence. There are various groups within a campus like class-wise and color-wise. These groups are involved in violence.
The crime rate has increased in 2010 by 7 numbers and in 2011 by 5 numbers. Therefore, the increasing trend has decreased by (7 – 5 =) 2 numbers in 2011.
Hypothesis: Crime in public campus is more than private campus. Let the expected crime in public campus is 60% and the observed crime is 55%. Standard error is 8.
Z = (Observed crime – Expected crime) / Standard error = (60 – 55) / 8 = 0.625. Since 0.625 is within ±1.96, crime in public campus is more than private campus.
Year
Number of crimes
Increase(+) / Decrease (-) from the last year
2009
131
2010
138
(138 – 131 =) +7
2011
143
(143 – 138 =) +5
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