You may need to use the appropriate appendix table or technology to answer this question. In order to estimate the difference between the average yearfy incemes of marketing managers in the East and West of the United States, the following information was gathered. (a) Develop an interval estimate for the difference between the average yearfy incomes of the marketing managers in the East and West. Use 98% conflidence. (Use East - West, Round your answers to three decimal piaces.) to (b) At a=0.02, use the p-value approach and test to determine if the average yearly income of marketing managers in the East is significantly different from those in the West. (Let d= East - West.) (i) Formulate the hypotheses. H0:12=0Ha:12=0H0:120Ha:12>0H0:12>0Ha:120H0:120Ha:12=0H0:12=0Ha:12=0 (ii) What is the value of the test statistic? (Round your answer to three decimal places.) (iii) What is the p-value? (Round your answer to five decimal places.) p-ralue= (iv) What is your conclusion? Do not reject H0. We can conclude that there is a significant difference between the average yearly incomes of marketing managers in the East and West. Do not reject H6. We cannot conclude that there is a significant difference between the average yearly incomes of marketing managers in the East and West. Reject H0. We cannot conclude that there is a significant difference between the average yearfy incomes of marketing managers in the East and West. Reject H0. We can conclude that there is a sigrificant difference between the average yearly incornes of marketing managers in the East and West