Multiple Choice
Two independent samples of sizes 40 and 50 are randomly selected from two populations to test the difference between the population means . The sampling distribution of the sample mean difference
is:
A) normally distributed
B) approximately normal
C) Student t-distributed with 88 degrees of freedom
D) approximately normal and student t-distributed with 88 degrees of freedom
E) none of these
Correct Answer:

Verified
Correct Answer:
Verified
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