## 5. Project 5 Order Description Using the ROI data set: For each of the 2 majors consider the ‘School Type’ column. Assuming the requirements are met, construct a 90% confidence interval for the proportion of the schools that are ‘Private’. Be sure to interpret your results. For each of the 2 majors construct a 95% confidence interval for the mean of the column ‘Annual % ROI’. Be sure to interpret your results. School Type Cost 30 Year ROI Annual ROI Private \$222,700.00 \$1,786,000.00 7.70% Private \$176,400.00 \$1,758,000.00 8.40% Private \$212,200.00 \$1,714,000.00 7.80% Public \$125,100.00 \$1,535,000.00 9.10% Private \$212,700.00 \$1,529,000.00 7.40% Public \$92,910.00 \$1,501,000.00 10.10% Private \$214,900.00 \$1,485,000.00 7.30% Private \$217,800.00 \$1,483,000.00 7.20% Private \$225,600.00 \$1,444,000.00 7.00% Private \$217,300.00 \$1,442,000.00 7.10% Private \$226,500.00 \$1,441,000.00 7.00% Private \$215,500.00 \$1,438,000.00 7.20% Private \$223,500.00 \$1,428,000.00 7.00% Private \$226,600.00 \$1,414,000.00 7.00% Private \$189,300.00 \$1,397,000.00 7.50% Public \$89,700.00 \$1,382,000.00 9.90% Public \$87,030.00 \$1,376,000.00 10.00% Private \$218,200.00 \$1,343,000.00 6.90% Private \$229,900.00 \$1,339,000.00 6.70% Private \$148,800.00 \$1,321,000.00 8.10% Best College ROI by Majo 2013: Payscale.com

5.
Project 5
Order Description
Using the ROI data set:

For each of the 2 majors consider the ‘School Type’ column. Assuming the requirements are met, construct a 90% confidence interval for the proportion of the schools that are ‘Private’. Be sure to interpret your results.

For each of the 2 majors construct a 95% confidence interval for the mean of the column ‘Annual % ROI’. Be sure to interpret your results.

School Type Cost 30 Year ROI Annual ROI
Private \$222,700.00 \$1,786,000.00 7.70%
Private \$176,400.00 \$1,758,000.00 8.40%
Private \$212,200.00 \$1,714,000.00 7.80%
Public \$125,100.00 \$1,535,000.00 9.10%
Private \$212,700.00 \$1,529,000.00 7.40%
Public \$92,910.00 \$1,501,000.00 10.10%
Private \$214,900.00 \$1,485,000.00 7.30%
Private \$217,800.00 \$1,483,000.00 7.20%
Private \$225,600.00 \$1,444,000.00 7.00%
Private \$217,300.00 \$1,442,000.00 7.10%
Private \$226,500.00 \$1,441,000.00 7.00%
Private \$215,500.00 \$1,438,000.00 7.20%
Private \$223,500.00 \$1,428,000.00 7.00%
Private \$226,600.00 \$1,414,000.00 7.00%
Private \$189,300.00 \$1,397,000.00 7.50%
Public \$89,700.00 \$1,382,000.00 9.90%
Public \$87,030.00 \$1,376,000.00 10.00%
Private \$218,200.00 \$1,343,000.00 6.90%
Private \$229,900.00 \$1,339,000.00 6.70%
Private \$148,800.00 \$1,321,000.00 8.10%
Best College ROI by Majo 2013: Payscale.com