If we have a sample of 12 drawn from a normal population, then we would use as our test statistic
A) t0 with 11 degrees of freedom
B) z0 with 11 degrees of freedom
C) t0 with 12 degrees of freedom
D) z0 with 12 degrees of freedom

Question

Quizplus · Accepted Answer

When drawing a sample from a normal population, if the population standard deviation is unknown and the sample size is small (n < 30), the appropriate test statistic is t0 with degrees of freedom equal to n - 1. In this case, with a sample size of 12, the degrees of freedom would be 12 - 1 = 11.

If We Have a Sample of 12 Drawn from a Normal