The mean of group 1 (n = 50) is 100, and the mean of group 2 (n = 60) is 90. Both samples have a standard deviation of 20. What is the appropriate value for the test statistic?
A) alpha
B) 50 + 60 = 110
C) 100 - 90 = 10
D) 20 - 20 = 0
Correct Answer:
Verified
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