construct two confidence intervals W r i t i n g

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.

__Grading Rubric__Insuffcient Emerging Competency Proficiency Mastery Correctness Points:0 (0.00%)Less than half of parts of all problems are solved correctly.Points:18.125 (12.50%)At least half of the parts of all problems are solved correctly.Points:27.1875 (18.75%)The majority of parts of all problems are solved correctly.Points:30.8125 (21.25%)Almost all parts of all problems are solved correctly.Points:36.25 (25.00%)All parts of all problems are solved correctly.Work Shown Points:0 (0.00%)Less than half all work is shown.Points:18.125 (12.50%)At least half of all work is clearly shown.Points:27.1875 (18.75%)The majority work is clearly shown.Points:30.8125 (21.25%)Almost all work is clearly shown.Points:36.25 (25.00%)All work is clearly shown.Explanations Points:0 (0.00%)Less than half of the explanations are complete and correct.Points:18.125 (12.50%)At least half of the explanations are complete and correct.Points:27.1875 (18.75%)The majority of the explanations are complete and correct.Points:30.8125 (21.25%)Almost all explanations complete and correct.Points:36.25 (25.00%)All explanations are complete and correct.Formatting Points:0 (0.00%)Less than half of the equations, expressions, and variables are properly formatted using the equation editor tool in Microsoft Word.Points:18.125 (12.50%)At least half of the equations, expressions, and variables are properly formatted using the equation editor tool in Microsoft Word.Points:27.1875 (18.75%)The majority of equations, expressions, and variables are properly formatted using the equation editor tool in Microsoft Word.Points:30.8125 (21.25%)Almost all equations, expressions, and variables are properly formatted using the equation editor tool in Microsoft Word.Points:36.25 (25.00%)All equations, expressions, and variables are properly formatted using the equation editor tool in Microsoft Word.

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