You correctly solved almost all the problems and fairly complete and detailed steps are provided to explain how to solve each. Your explanations demonstrate a proficient understanding of most of the statistical concepts and correct terminology is used throughout.
Make sure that you are showing how you find the criical values used in each confidence interval. Using Excel is the easiest and most straight-forward, but if you are using a table or an outside source make sure it is cited.
All of your calculations on the confidence intervals are good, just make sure you are fully describing the steps you took in finding each in the Word document.
Your work on #5 is incorrect. There is a specific formula to be applied that will use the information given in the problem to find the minimum sample size necessary.
Blank form is below and the answers I had. I just need the right answers inserted in the areas that are wrong.
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