Question: The company needs to know if there is any evidence to suggest that its two primary activities differ in worker hazard before prioritizing its response to the safety allegation made against it. It is your task to report on this question. You have been presented with collated data from each of its 28 operating plants (number of reported accidents per 100,000 workers/year/plant). The accident reporting and recording criteria have been previously audited and are the same at all the plants.

Tile

120 137 351 1128 191 234

90 318 56 107 430 2217

219 737 173 307

Brick

549 121 328 2179

550 280 5218 1729 438

551 329 625

You a required to produce a coherent, concise, well presented and well-structured report which informs the company executive whether or not there is genuine evidence of difference in the accident rates between the two operations. In concluding the report you cannot assume that the company executive understands statistical methods in detail and you will therefore have to summarize your findings in plain non-technical language. The length of the report should be no longer than 4 pages.

You are expected to:

 introduce the type of question you are facing including hypothesis testing

 produce appropriate descriptive/graphical summaries of the data

 justify your choice of statistical test

 undertake the correct statistical tests

 interpret p values and confidence intervals correctly

 arrive at brief and clear conclusions that directly answer the problem

Price: $2.99

Solution: The downloadable solution consists of 5 pages
Deliverable: Word Document