tolong bantuannya

AL 4 (Bobot @ 20 %) Android marketing director will decide to give a BONUS if the average sales result per salesmen has reached more than 12 units. To test his opinion, then 10 salesmen were studied as a random sample. The results showed that the sales of the 10 salesmen were 9,14, 17, 20, 13, 16, 10, 22, 21, and 8. a. Test the opinion with = 0.05 b. What decision will the Android Marketing Director make