SOLUTION: In an experiment, researchers tested 40 adults (group A), and 40 children (group C) to determine which room temperature each person finds most comfortable. If the researchers suspe
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Question 376459: In an experiment, researchers tested 40 adults (group A), and 40 children (group C) to determine which room temperature each person finds most comfortable. If the researchers suspect that on average children prefer warmer room temperature, which set of hypotheses should they use?
A. H0: μA - μc = 0
Ha : μA - μc < 0
B. H0: μA - μc = 0
Ha : μA - μc > 0
C. H0: μA - μc = 0
Ha : μA - μc ≠ 0
Found 2 solutions by beto20da, jim_thompson5910:
Answer by beto20da(1) (Show Source): You can put this solution on YOUR website!
a
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
The answer is choice A because 
can be written as 
which basically says that the average temp for children is greater than the average temp for adults.
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