The test scores for selected samples of sociology students who took the course from three different instructors are shown below. 
At α = .05, test to see if there is a significant difference among the averages of the three groups. Use both the critical value and p-value approaches.
Definitions:
Real Numbers
The set of all rational and irrational numbers, including all numbers that can be written as a decimal.
Associative Property
A mathematical principle stating that the way in which terms are grouped in an operation (addition or multiplication) does not change the result.
Addition
The mathematical operation that combines two or more quantities into a single sum.
Commutative Property
A fundamental property of addition and multiplication that states the order of the operands does not change the result, expressed as a+b=b+a or ab=ba.
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