6. 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

6.
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

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