Case Study Five

and Summary Paper

Fatal Crash Comparison

In Case Study One, you performed some calculations on data compiled by the Ohio State Highway Patrol regarding aggressive speeding. For this Case Study and for the Summary Paper, you will use another set data compiled by the Highway Patrol, this one regarding traffic fatalities in the years 2007 and 2008.

Your Assignment – data calculation

On the course website, you can find the data for traffic-related fatalities in Ohio (as compiled by the Ohio State Highway Patrol) for 2007 and 2008. (You can also find the information online in PDF format at http://www.publicsafety.ohio.gov/links/HSY7606-2007.pdf page 93 and http://www.publicsafety.ohio.gov/links/2008CrashFacts.pdf page 94). These data display information regarding traffic crashes by county. For this assignment, you will specifically be focusing on the number of fatal crashes in order to conduct a hypothesis test using the information. More specifically, here is your assignment:

1. Compile a spreadsheet to succinctly display the data for fatal crashes for all of Ohio’s 88 counties for both 2007 and 2008.
2. Construct an appropriate hypothesis test to compare the data between the two counties to find the true difference in mean fatalities per year.
3. Choose the appropriate test statistic
4. Determine the appropriate "critical values" for the problem situation, using a significance level of = 0.01.
5. Calculate the necessary sample statistic.
6. Draw your conclusions regarding your sample statistic and hypothesis.
7. Report your findings as directed below.

Your Assignment – reporting your findings and analysis

The writing assignment for this case study will be slightly different than the previous ones as this assignment will double as your summary paper. It will be a combination of writing about the current case study, the reports from which the information for this case study came, previous material from the course and some information pulled from outside sources.

Before starting your paper, though, you will need to glance over the two data contained in the 2007 Traffic Crash Facts and 2008 Traffic Crash Facts reports used to obtain the information used in this case study. You can obtain this information from the course website or from the two links above. You simply need to be familiar with what is in the report, as you do not need to calculate anything with the data, just refer to it.

(Note: While each report is near 300 pages, nearly two-thirds of the pages shows data from each individual city in Ohio. Most of what you would be interested in will be the information from pages roughly 1-100. And it is almost completely in table format.)

For your paper, you are to:

1. Identify several other statistics in the two reports that you feel could be compared with or contributed to the fatality information you used in this case study.
2. Explain why you feel that these data can be used in conjunction with the data from the case study or how they can be compared to the data from the case study.
3. Determine and describe what statistical tests from this course you might perform if you were to further study the correlation between that stats you chose in Part 1 and the data used in the case study.
4. Make predictions on what you believe your tests from Part 3 would show if you were to actually perform the statistical tests you chose.
5. Describe any "gut feelings," should you have any, about data that "should" be collected but was not in the report. This would be data that you feel would better help analyze traffic fatalities in Ohio.
6. Refer to any "outside" influences and/or statistics that can help further support your arguments and predictions, i.e. OSHP programs and enforcement patterns, weather patterns, economic influences, etc.

Price: $14.77

Solution: The downloadable solution consists of 6 pages, 877 words and 9 charts.
Deliverable: Word Document