A survey of full professors (highest ranking) in History found that the average income is $74,914. Because that survey is now over 8 years old, an institutional researcher wants to test this figure by taking a random sample of 112 History professors with full professorship status. The researcher finds a sample mean of $81,342. The population standard deviation is known to be $15,121.
-How much evidence do we have that the figure has changed?
A)No evidence
B)Some evidence
C)Strong evidence
D)Very Strong evidence
E)Extremely Strong evidence

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The Answer of A survey of full professors (highest ranking) in History found that the average income is $74,914. Because that survey is now over 8 years old, an institutional researcher wants to test this figure by taking a random sample of 112 History professors with full professorship status. The researcher finds a sample mean of $81,342. The population standard deviation is known to be $15,121.
-How much evidence do we have that the figure has changed?
A)No evidence
B)Some evidence
C)Strong evidence
D)Very Strong evidence
E)Extremely Strong evidence

A Survey of Full Professors (Highest Ranking) in History Found