In the test for comparing two population means when population variances are unknown and unequal,a student calculates the degrees of freedom using the proper formula as 34.7.How many degrees of freedom should the student assume to find the p-value of the test?
A) 34
B) 34.7
C) 35
D) None of these choices is correct.

Question

Quizplus · Accepted Answer

When calculating degrees of freedom for a t-test with unequal variances (Welch's t-test), the degrees of freedom are often rounded down to the nearest whole number, so 34.7 would be rounded to 34.

In the Test for Comparing Two Population Means When Population