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Using EXCEL attempt the following questions: Question 1: (10 marks) Ross Co., Westerfield, Inc., and Jordan Company announced a new agreement to market their respective products in China on July 18, February 12, and October 7, respectively. Given the information below, calculate the cumulative abnormal return (CAR) for these stocks as a group. Assume all companies have an expected return equal to the market return. Graph and interpret your results. Do your results support market efficiency? Ross Co. Westerfield, Inc. Jordan Company Date Market Return Company Return Market Return Company Retur Date Market Returi Company Return July 12 Feb 8 7 9 July 13 1 Feb 9 Oct 2 2 July 16 6 8 Feb 10 6 Oct 6 July 18 Feb 12 Oct 7 July 19 8 Feb 15 Oct & Oct 9 July 20 Teb 17 1 Oct 10 July 23 - Okt 13 Feb 18 2 1 Using EXCEL attempt the following questions: Question 1: (10 marks) Ross Co., Westerfield, Inc., and Jordan Company announced a new agreement to market their respective products in China on July 18, February 12, and October 7, respectively. Given the information below, calculate the cumulative abnormal return (CAR) for these stocks as a group. Assume all companies have an expected return equal to the market return. Graph and interpret your results. Do your results support market efficiency? Ross Co. Westerfield, Inc. Jordan Company Date Market Return Company Return Market Return Company Retur Date Market Returi Company Return July 12 Feb 8 7 9 July 13 1 Feb 9 Oct 2 2 July 16 6 8 Feb 10 6 Oct 6 July 18 Feb 12 Oct 7 July 19 8 Feb 15 Oct & Oct 9 July 20 Teb 17 1 Oct 10 July 23 - Okt 13 Feb 18 2 1