Test Hypotheses about a Population Mean with Unknown
-If we have a sample of 12 drawn from a normal population, then we would use as our test statistic
A) to with 11 degrees of freedom
B) $z 0$ with 11 degrees of freedom
C) to with 12 degrees of freedom
D) $z _ { 0 }$ with 12 degrees of freedom

Question

Quizplus · Accepted Answer

When the population standard deviation is unknown and the sample size is small (n < 30), a t-test is appropriate, using n - 1 degrees of freedom, which in this case is 11 (12 - 1 = 11).

Test Hypotheses About a Population Mean with Unknown -If We z0z 0z0

Test Hypotheses About a Population Mean with Unknown
-If We $z 0$