Multiple Choice
Group 1 has a mean of 13.4 and group 2 has a mean of 15.2. Both populations are known to have a variance of 9.0 and each sample consists of 18 items. What is the test statistic to test for equality of population means?
A) -1.755
B) -1.643
C) -1.800
D) -1.285
Correct Answer:
Verified
Correct Answer:
Verified
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