(e) Identify one dividend change (interim or final) announcement (note: compare interim to interim to identify changes in interim dividend or final to final to identify changes in final dividend using "dividend history from the DatAnalysis Premium Database" for the company allocated to you. Identify interim announcement date from half yearly report. Identify final announcement date from preliminary final report. (i) Calculate the three-day return earned by your firm for the period from the day before the announcement day to the day after (2 the announcement date; and the two-day return earned by your mark firm for the period from the day of the announcement to the day s) after the announcement date (ii) Calculate the market return for the corresponding periods in (i). (2 mark