To prepare for this Discussion: Review Chapters 6 and 7 of the Frankfort-Nachmias & Leon-Guerrero text and in Chapter 7, p. 188, consider Hispanic migration and earnings and focus on how different levels of confidence and sample size work together.Review Magnusson’s web blog found in the Learning Resources to further your visualization and understanding of confidence intervals.Use the Course Guide and Assignment Help found in this week’s Learning Resources to search for a quantitative article related to confidence intervals.Using the SPSS software, General Social Survey dataset and choose a quantitative variable that interests you. By Day 3 Using SPSS: Take a random sample of 100.Calculate the 95% confidence interval for the variable.Calculate a 90% confidence interval.Take another random sample of 400.Calculate the 95% confidence interval for the variable.Calculate a 90% confidence interval. Post your results, the mean of Age to verify the dataset you used, and an explanation of how different levels of confidence and sample size affect the width of the confidence interval. Next, consider the statement, “Confidence intervals are underutilized” and explain what the implications might be of using or not using confidence intervals. Provide examples based on the results of your data. Also, use your research to support your findings.

The height of the cylinder is 8 inches.We'll be analyzing the surface area of a round cylinder - in other words the amount of material needed to "make a can".A cylinder (round can) has a circular base and a circular top with vertical sides in between. Let r be the radius of the top of the can and let h be the height. The surface area of the cylinder, A, is A=2πr2+2πrh (it's two circles for the top and bottom plus a rolled up rectangle for the side). Part a: Assume that the height of your cylinder is 8 inches. Consider A as a function of r, so we can write that as A(r)=2πr2+16πr. What is the domain of A(r)? In other words, for which values of r is A(r) defined?Part b: Continue to assume that the height of your cylinder is 8 inches. Write the radius r as a function of A. This is the inverse function to A(r), i.e to turn A as a function of r into. r as a function of A.r(A)=undefined Hints:To calculate an inverse function, you need to solve for r. Here you would start with A=2πr2+16πr. This equation is the same as 2πr2+16πr−A=0 which is a quadratic equation in the variable r, and you can solve that using the quadratic formula.If you want to type in 3π+1 in Mobius, in text mode you can type in (3*pi+1)/(x+1). There is more information in the Introduction to Mobius unit. Part c: If the surface area is 225 square inches, then what is the rardius r? In other words, evaluate r(225). Round your answer to 2 decimal places.Hint: To compute a numeric square root such as 17.3−−−−√, you couldUse a spreadsheet such as Microsoft Excel or OpenOffice Calc and type in =sqrt(17.3)Use a browser to connect to the Internet and type in sqrt(17.3) into a search fieldUse a calculatorThe radius is inches if the surface area is 225 square inches.I will need a step-by- explanation plus the answers. Let me know if you need anything else.

Week Five MyStatLab HomeworkThere is a MyStatLab assignment due in Weeks One through Five of this course. MyStatLab is a diagnostic lab that provides customized instruction and practice based on what the program determines that the students know. Each assignment contains 20-25 multiple choice questions with the following tools available: Help Me Solve This, View an Example, Textbook, StatCrunch, Tech Help, Calculator, Ask My Instructor, Connect to a Tutor, and Instructor Tip. There is no time limit. Labs are to be completed on the MyStatLab system by Day 7 at 11:59 PM Mountain Time, but may be revised throughout the course.