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Delta, United, and American Airlines announced purchases of planes on July 18 (7/18), February 12 (2/12), and October 7 (10/7), respectively. Delta United American MarketCompany MarketCompany MarketCompany Date Return Return Date Return Return Date Return Return 7/12 -.50 -.79 2/8 -.99 -1.38 10/1 .70 .32 7/13 .00 .40 2/9 -1.09 -1.38 10/2 .60 .85 7/16 2.48 2.78 2/10 .60 .30 10/3 1.30 1.30 7/17 -2.48 -2.14 2/11 .80 4.93 10/6 .30 -4.17 7/18 -2.29 1.19 2/12 -.50 -.11 10/7 -2.40 -.30 7/19 -93 -622/15 1.30 4.10 10/8 .70 .70 7/20 -.99 -1.15 2/16 .70 .70 10/9 -.50 -.34 7/23 .81 .45 2/17 -.50 -2610/10.50 -.30 7/24 .30 012/18 .50 .2210/13 .00 -.30 Given the above information, calculate the cumulative abnormal return (CAR) for these stocks as a group. All of the stocks have a beta of 1 and no other announcements are made. (A negative answer should be indicated by a minus sign. Leave no cells blank - be certain to enter "0" wherever required. Do not round intermediate calculations and round your answers to 2 decimal places, e.g., 32.16.) Abnormal returns (Ri - RM) United American Delta Sum Days from announcement -4 Average Cumulative abnormal return abnormal return -3 -2 -1 0 1 2 3 4 Delta, United, and American Airlines announced purchases of planes on July 18 (7/18), February 12 (2/12), and October 7 (10/7), respectively. Delta United American MarketCompany MarketCompany MarketCompany Date Return Return Date Return Return Date Return Return 7/12 -.50 -.79 2/8 -.99 -1.38 10/1 .70 .32 7/13 .00 .40 2/9 -1.09 -1.38 10/2 .60 .85 7/16 2.48 2.78 2/10 .60 .30 10/3 1.30 1.30 7/17 -2.48 -2.14 2/11 .80 4.93 10/6 .30 -4.17 7/18 -2.29 1.19 2/12 -.50 -.11 10/7 -2.40 -.30 7/19 -93 -622/15 1.30 4.10 10/8 .70 .70 7/20 -.99 -1.15 2/16 .70 .70 10/9 -.50 -.34 7/23 .81 .45 2/17 -.50 -2610/10.50 -.30 7/24 .30 012/18 .50 .2210/13 .00 -.30 Given the above information, calculate the cumulative abnormal return (CAR) for these stocks as a group. All of the stocks have a beta of 1 and no other announcements are made. (A negative answer should be indicated by a minus sign. Leave no cells blank - be certain to enter "0" wherever required. Do not round intermediate calculations and round your answers to 2 decimal places, e.g., 32.16.) Abnormal returns (Ri - RM) United American Delta Sum Days from announcement -4 Average Cumulative abnormal return abnormal return -3 -2 -1 0 1 2 3 4