Please help with my statistics homework

Posted on 2014-03-29 06:39:00 in Statistics by ERICA

A random sample is selected from a normal population with a mean u= 50 and a standard deviation of o= 12. After a treatment is administered to the individuals in the sample, the sample mean is found to be M= 55.



a. If the sample consists of n=16 scores, is the sample mean sufficient to conclude that the treatment has a significant effect? Use a two-tailed test with a= .05



b. If the sample consists of n= 36 scores, is the sample mean sufficient to conclude that the treatment has a significant effect. Use a two-tailed test with a= .05



c. Comparing your answers for parts a and b, explain how the size of the sample influences the outcome of a hypothesis test.

---

Answer Comment

No Answers Posted Yet.