# Course Project - Phase 2

**Course Project - Phase 2**

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Week 1 Phase 1 documents attached

This week you will begin working on Phase 2 of your course project. Using the same data set and variables for your selected topic, add the following information to your analysis:

- Discuss the importance of constructing confidence intervals for the population mean.
- What are confidence intervals?
- What is a point estimate?
- What is the best point estimate for the population mean? Explain.
- Why do we need confidence intervals?

- Find the best point estimate of the population mean.

- Construct two confidence intervals for the population mean: a
**95%**confidence interval and a**99%**confidence interval. Assume that your data is normally distributed and**the population standard deviation is unknown**. - Please show your work for the construction of these confidence intervals and be sure to format your equations to fit the appropriate form (may need editing here).

- Write a paragraph that correctly interprets the confidence intervals in context of your selected topic.

- Compare and contrast your findings for the 95% and 99% confidence intervals.
- Did you notice any changes in your interval estimate? Explain.
- What conclusion(s) can be drawn about your interval estimates when the confidence level is increased? Explain.

**Answers 1**

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This week you will begin working on Phase 3 of your course project. Using the same data set and variables for your selected topic that you used for phases 1 and 2, add the following information to …

This week you will begin working on Phase 2 of your course project. Using the same data set and variables for your selected topic, add the following information to your analysis:

- Discuss the …

## Course Project - Phase 3

This week you will begin working on Phase 3 of your course project. Using the same data set and variables for your selected topic that you used for phases 1 and 2, add the …