For the above example, what is the correct degrees of freedom to use to look up in a t-test?
A) 10
B) 11
C) 12
D) Use a z table or an infinite number for a t table

Question

Quizplus · Accepted Answer

To calculate degrees of freedom for a t-test, subtract 1 from the sample size, which in this case is 12-1=11. Therefore, the correct degrees of freedom to use would be 11. Option D is incorrect as using a z-table or an infinite number for a t-table is only appropriate when dealing with a normal distribution, which is not the case here.

For the Above Example, What Is the Correct Degrees of Freedom