An experiment is designed to compare five different advertisements for a pen. Advertisement A greatly undersells the pen. Advertisement B slightly undersells the pen. Advertisement C slightly oversells the pen. Advertisement D greatly oversells the pen. Advertisement E correctly states the pen. A sample of 30 adult respondents is randomly assigned to the five advertisements. After reading the advertisement, all respondents unknowingly receive the same pen to evaluate and are then asked to rate the pen from 1 to 7 (lowest to highest) on three characteristics. The combined scores of three ratings for the 30 respondents are in the data table. Complete parts (a) through (d) below. Click on the icon to view the data table. Click here to view page 1 of the F table. Click here to view page 2 of the F table. Click here to view page 3 of the F table. Click here to view page 4 of the F table. a. At the 0.01 level of significance, is there evidence of a difference in the mean rating of the pens following exposure to five advertisements? Determine the hypotheses. Choose the correct answer below. O A. HO. My = M2= . . . =15 OB. HO. H1 = H2= . . . = H6 Hy: My # 12 # . . . $ 15 Hy: My $ 12 # . . . $ HG O C. Ho: My = 2= . . . = H6 OD. Ho: My = 12= . . . = 15 Hy: Not all the means are equal. H: Not all the means are equal. Find the test statistic. FSTAT = (Round to two decimal places as needed.) Determine the critical value. Fa =(Round to two decimal places as needed.) Reach a decision. Ho. There is evidence to conclude that there is a difference in the mean rating of the pens following exposure to five advertisements.b. If appropriate, determine which advertisements differ in mean ratings. Is there significant evidence that Advertisement A and Advertisement B differ in mean ratings? O A. No O B. Yes O C. It is not appropriate to test which advertisements differ in mean ratings. Is there significant evidence that Advertisement A and Advertisement C differ in mean ratings? O A. No O B. Yes O C. It is not appropriate to test which advertisements differ in mean ratings. Is there significant evidence that Advertisement A and Advertisement D differ in mean ratings? O A. Yes O B. No O C. It is not appropriate to test which advertisements differ in mean ratings.Is there significant evidence that Advertisement A and Advertisement E differ in mean ratings? O A. No O B. Yes O C. It is not appropriate to test which advertisements differ in mean ratings. Is there significant evidence that Advertisement B and Advertisement C differ in mean ratings? O A. Yes O B. No O C. It is not appropriate to test which advertisements differ in mean ratings. Is there significant evidence that Advertisement B and Advertisement D differ in mean ratings? O A. No O B. Yes O C. It is not appropriate to test which advertisements differ in mean ratings.Is there significant evidence that Advertisement B and Advertisement E differ in mean ratings? O A. Yes O B. No O C. It is not appropriate to test which advertisements differ in mean ratings. Is there significant evidence that Advertisement C and Advertisement D differ in mean ratings? O A. No O B. Yes O C. It is not appropriate to test which advertisements differ in mean ratings. Is there significant evidence that Advertisement C and Advertisement E differ in mean ratings? O A. Yes O B. No O C. It is not appropriate to test which advertisements differ in mean ratings.Is there significant evidence that Advertisement D and Advertisement E differ in mean ratings? O A. No O B. Yes O C. It is not appropriate to test which advertisements differ in mean ratings. c. At the 0.01 level of significance, is there evidence of a difference in the variation in ratings among the five advertisements? Determine the hypotheses. Choose the correct answer below. O A. Ho: 02 = 07 = . . . =07 OB. Ho: 7 H: Not all the variances are equal. OC. Ho: 02 = 07 = . . . =0'5 OD. H: 07 = 02 H: Not all the variances are equal. H1:07 7 02 Find the test statistic. FSTAT = (Round to two decimal places as needed.)Determine the critical value. Fcl = (Round to two decimal places as needed.) Reach a decision. V H0. There is V evidence to conclude that there is a difference in the variation in ratings among the ve advertisements. d. Which advertisement(s) should you use, and which advertisement(s) should you avoid? O A. The tests do not indicate that any of the tests are better than any of the others. 0 B. Use advertisements that undersell the pen's characteristics since they have the highest mean ratings, and avoid advertisements that oversell the pen's characteristics. 0 C. Use advertisements that oversell the pen's characteristics since they have the highest mean ratings, and avoid advertisements that undersell the pen's characteristics. 0 D. Use Advertisement E, because it correctly states the pen's characteristics.