Question

It is generally believed that a practical major such as business or engineering can really pay off for college graduates (CNNMoney.com, July 22, 2010). Other studies have shown that it is not just the major but also how students perform, as measured by their GPA, that influences their salaries. Henry Chen, an employee of PayScale.com, wants to measure the effect of major and GPA on starting salaries of graduates of the University of California at Irvine. He samples starting salaries of five graduates for a given GPA range from the schools of business, engineering, and social sciences. The sample data are shown in the following table. GPA Business Social Sciences Engineering 44 3.5-4.0 3.0-3.5 E < 3.0

Answer 1

Solution :

Applying ANOVA on above

Source of Variation	SS	df	MS	F	P-value
Sample	798.0444	2	399.0222	4.283	0.021
Columns	1187.3778	2	593.6889	6.372	0.004
Interaction	32.8889	4	8.2222	0.088	0.986
Within	3354.0000	36	93.1667
Total	5372.3111	44

a-2)

Option 4 is correct.

b)

Option 1 is correct.

c)

Option 1 is correct.

Let me know in the comment section if anything is not clear. I will reply ASAP!
If you liked the answer, please give an upvote. This will be quite encouraging for me.Thank-you!