A confidence interval is a defined range of values such that there is a specified probability that the value of a parameter lies within the interval.

In Part I of this project, you will analyze data, complete research, and provide a write-up that includes calculations.

Deliverables

• Introduction--Provide a description of the provided data and discuss what you know about the chosen topic.
• Sample DataProvide the 50 data values on your worksheet. You must provide ALL of your sample data.
• Problem ComputationsFor the topic, you must answer the following:
  • Determine the mean and standard deviation of your sample.
  • Find the 80%, 95%, and 99% confidence intervals.
  • Make sure to list the margin of error for the 80%, 95%, and 99% confidence intervals
  • Provide a sentence for each confidence interval that explains what the interval means in the context of the topic of your project.
  • What trend do you see in the confidence interval as the confidence level rises? Explain mathematically why that takes place.
  • Explain how Part I of the project has helped you understand confidence intervals better?
  • How did this project help you understand statistics better?

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