Multiple Choice
Independent simple random samples are taken to test the difference between the means of two populations whose variances are known. The sample sizes are n1 = 38 and n2 = 42. The correct distribution to use is the
A) normal distribution
B) t distribution with 80 degrees of freedom
C) t distribution with 79 degrees of freedom
D) t distribution with 78 degrees of freedom
Correct Answer:
Verified
Correct Answer:
Verified
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