Answered: College X wanted to know if their…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Question

College X wanted to know if their student body was changing its educational make up. In 2009, College X believed that their students could be divided as follows:

Education	Breakdown
Not a HS grad	16.00%
HS grad	32.00%
Some College	18.00%
Associate's Degree	8.00%
Bachelor's Degree	17.00%
Above Bachelor's	9.00%

In 2017, College X randomly polled 500 of their students and observed the new data:

Education	Frequency
Not a HS grad	72
HS grad	159
Some college	85
Associate's degree	44
Bachelor's Degree	92
Above Bachelor's	48

Is the educational make up of the College changing?

Also, what should be used?

confidence intervals
z-score
cause/correlation/regression or Chi-Squared
hypothesis tests

Expert Solution

Step 1

Given:

The observed values are

Step 2

The expected values are

e.g. 500 × 16% = 80

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