MTH 231 Week 4 Team Assignment Confidence Intervals/MTH231nerddotcom
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<strong>MTH</strong> <strong>231</strong> <strong>Week</strong> 4 <strong>Team</strong> <strong>Assignment</strong> <strong>Confidence</strong> <strong>Intervals</strong><br />
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Resources: Ch. 5 and 6 of the text, the University Library, the Internet, and Statdisk<br />
Identify a normally distributed variable related to your chosen life science that serves as<br />
your example variable. Review the data sets presented in Appendix B of the text and in<br />
Statdisk, selecting one that corresponds with your chosen life science. Choose a<br />
particular variable you would like to explore and use Statdisk to determine if its<br />
distribution is approximately normal.<br />
Note. Data Set 5: Passive and Active Smoke in the text does not include normally<br />
distributed data and may not be used in this project.<br />
Prepare a 12- to 15-slide Microsoft® PowerPoint® presentation that explains confidence<br />
intervals in your chosen life science. Imagine that you are responsible for educating<br />
first-year college students who are majoring in your chosen life science. Explain to the<br />
students how and why confidence intervals relate to their field.<br />
Discuss the following questions:<br />
What is a normal distribution? Describe your example variable and explain why<br />
normally distributed data is important in your chosen life science. Show the distribution<br />
of your example variable in a Statdisk-generated image and demonstrate how to calculate<br />
the probability of a range of values within this normal distribution.<br />
What is a standard normal distribution? How does it differ from other normal<br />
distributions? Convert the normally distributed example variable within your chosen life<br />
science to a standard normal distribution. Show this example in a Statdisk-generated<br />
image and demonstrate how to calculate the probability of a range of values within this<br />
standard normal distribution.
What is a confidence interval? Outline how confidence intervals may be used in your<br />
chosen life science. Demonstrate how to define confidence intervals within the normal<br />
distribution example variable.<br />
What is a confidence level? Show how a confidence level relates to the confidence<br />
interval using the example variable.<br />
What is a critical value? Show how critical values relate to the confidence interval using<br />
the example variable.<br />
What is a margin of error? Describe how a margin of error relates to confidence<br />
intervals and to your chosen life science.<br />
Provide an example related to your example variable.<br />
What is a point estimate? Explain how a point estimate found from a confidence interval<br />
would be applied in your chosen life science. Provide an example related to your example<br />
variable.<br />
What can a confidence interval tell researchers in your chosen life science about an<br />
estimate of population mean? Provide an example related to your example variable.<br />
What can a confidence interval tell researchers in your chosen life science about an<br />
estimate of population variance? Provide an example related to your example variable.<br />
Include a title slide and conclusion slide, and cite at least four references on a references<br />
slide.<br />
Present the information about confidence intervals and your chosen life science to the<br />
instructor and the class just as you would to firstyear college students who need this<br />
information.<br />
For Local Campus students, these are oral presentations accompanied by Microsoft®<br />
PowerPoint® presentations.<br />
For Online and Directed Study students, these are Microsoft® PowerPoint®<br />
presentations with notes.<br />
Discuss with your classmates and answer questions.