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.
-What is the rejection point for testing these hypotheses at α = .05?
A) 1.28
B) 1.645
C) 1.96
D) 2.33
E) 2.575
Correct Answer:
Verified
Correct Answer:
Verified
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