The t-test for the mean difference between 2 related populations assumes that the respective:
A) sample sizes are equal.
B) sample variances are equal.
C) populations are approximately normal or sample sizes are large.
D) All of the above
Question 2
The general format for a confidence interval is:
A) point estimate z (standard deviation).
B) point estimate (critical value)(standard error).
C) margin of error (confidence coefficient) (standard error).
D) point estimate (critical value)(standard deviation)
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