MA215 Grantham University Business Statistics Project

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JbeyqGerx

Mathematics

MA215

Grantham University

Description

Using the ROI data set:

  1. 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.
  2. 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.

* ROI Data has been attached.

Unformatted Attachment Preview

School Type Private Private Private Public Private Public Private Private Private Private Private Private Private Private Private Public Public Private Private Private Best College ROI by Majo 2013: Payscale.com Cost $222,700.00 $176,400.00 $212,200.00 $125,100.00 $212,700.00 $92,910.00 $214,900.00 $217,800.00 $225,600.00 $217,300.00 $226,500.00 $215,500.00 $223,500.00 $226,600.00 $189,300.00 $89,700.00 $87,030.00 $218,200.00 $229,900.00 $148,800.00 30 Year ROI $1,786,000.00 $1,758,000.00 $1,714,000.00 $1,535,000.00 $1,529,000.00 $1,501,000.00 $1,485,000.00 $1,483,000.00 $1,444,000.00 $1,442,000.00 $1,441,000.00 $1,438,000.00 $1,428,000.00 $1,414,000.00 $1,397,000.00 $1,382,000.00 $1,376,000.00 $1,343,000.00 $1,339,000.00 $1,321,000.00 Annual ROI 7.70% 8.40% 7.80% 9.10% 7.40% 10.10% 7.30% 7.20% 7.00% 7.10% 7.00% 7.20% 7.00% 7.00% 7.50% 9.90% 10.00% 6.90% 6.70% 8.10% School Type Private Private Private Private Private Public Private Private Public Private Public Private Public Private Public Public Public Public Private Public Cost $221,700.00 $213,000.00 $230,100.00 $222,600.00 $225,800.00 $87,660.00 $224,900.00 $221,600.00 $125,100.00 $215,700.00 $92,530.00 $217,800.00 $89,700.00 $229,600.00 $101,500.00 $115,500.00 $104,500.00 $69,980.00 $219,400.00 $64,930.00 30 Year ROI Annual ROI $2,412,000.00 8.70% $2,064,000.00 8.30% $1,949,000.00 7.90% $1,947,000.00 8.00% $1,938,000.00 8.00% $1,937,000.00 11.20% $1,915,000.00 7.90% $1,878,000.00 7.90% $1,854,000.00 9.80% $1,794,000.00 7.90% $1,761,000.00 10.60% $1,752,000.00 7.70% $1,727,000.00 10.70% $1,716,000.00 7.50% $1,703,000.00 10.20% $1,694,000.00 9.70% $1,690,000.00 10.10% $1,685,000.00 11.50% $1,676,000.00 7.60% $1,668,000.00 11.70%
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Explanation & Answer

Attached.

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...


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