Samples from two high schools are being tested for the difference in their average levels of prejudice.One sample contains 39 respondents and the other sample contains 47 respondents.The appropriate sampling distribution is the
A)t distribution.
B)Z distribution.
C)F distribution.
D)any of the above

Question

Quizplus · Accepted Answer

The appropriate sampling distribution for comparing the means of two independent samples with different sample sizes is the t distribution. Therefore, we choose choice A. The Z distribution is used for large sample sizes (usually above 30), while the F distribution is used for comparing variances between two groups.

Samples from Two High Schools Are Being Tested for the Difference