mohon bantuannya

SOAL 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? SOAL. 5 (Bobot @ 20 4 ) The" leadership of a bank will improve the quality of service, if the results of hypothesis testing indicate that bank customers who are dissatisfied with the quality of service have exceeded 10. The results of research on 200 customers, it turns out that there are 35 people who are not satisfied. a. With = 0.05 Test the opinion! b. What decisions will be taken by the bank's leadership? c. With a 95% confidence level, estimate the percentage interval of dissatisfied customers! SOAL 6 (Bobat @ 20 %) The following data " increase in advertising costs and % increase in sales; increase in advertising costs % increase in sales 9 a, How is the relationship between variables X and Y? b. Make the equation = a * X! c. Based on the data above, with = 0.05 test that X does not affect Y with the alternative, is there a positive offect? d. What is the sales forecast if advertising costs are 10? SOAL 7 (Bobot ( 20 %) The marketing director of a daily newspaper in the capital is conducting a study on the relationship between the environment in which readers live and the type of newspaper articles that readers read for the first time The following is the data on the number of respondents studied: Origin Article Type Reader News Sport Entertain Advertisem ment ent City 65 80 42 36 village 52 47 95 12 With = 3%, test the hypothesis which states that the environment in which the reader lives is related to the type of newspaper article the reader reads for the first time