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

Algebra ->  Probability-and-statistics -> 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      Log On


   

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) About Me  (Show Source):
Answer by jim_thompson5910(35256) About Me  (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.