Multiple Choice
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.
-The test statistic is _____.
A) 4.50
B) 47.61
C) 9.00
D) -47.61
E) -4.50
Correct Answer:
Verified
Correct Answer:
Verified
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