The project is broken into two parts. You will complete Part I in Week 6 and Part II in Week 7. In Week 6,
Confidence Intervals will be explored and in Week 7 Hypothesis testing will be explored. 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 pick a topic, complete research and provide a write-up that includes
calculations. Round all values to two decimal places when appropriate.
Write at least a 1-Page Report
Open a Word Document
Introduction--Provide a description of your topic and cite where you found your data.
Sample Data—Include a 5x10 table including your 50 values in your report. You must provide ALL of your
sample data.
Problem Computations—For the topic you chose, 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 interval.
Create your own confidence interval (you cannot use 80%, 95%, and 99%) and make sure to show your
work.
Make sure to list the margin of error.
Problem Analysis—Write a half-page reflection.
What trend do you see takes place to the confidence interval as the confidence level rises? Explain
mathematically why that takes place.
Provide a sentence for each confidence interval created in part c) which explains what the confidence
interval
means in context of topic of your project.
Explain how Part I of the project has helped you understand confidence intervals better?
How did this project help you understand statistics better?
Sample Solution