Problem 7-5 Cumulative Abnormal Returns (LO2, CFA2) Ross Co Westerfield, Inc., and Jordan Company announced a new agreement to market thelr 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. (A negative value should be indicated by a minus sign. Leave no cells blank - be certain to enter "o" wherever required. Do not round intermediate calculations. Round your answers to one decimal place.) Ross Co. Westerline Jordan Com Parket company Market Company Mario Coop Date Return Return bate Neturn turn bute Return July 12 -. Feb Oct July 11 Feb Oct 2 July 16 Feb 10 Oct July 17 Feb 13 July 1 Oct July 19 Feb 19 July 20 July 23 Feb 12 Huly 20 . Oct 1 .6 . . 26 3. Feb 12 Teb 16 Oct Oct DE 10 0 Abnormal returns (R-RM) W'field Jordan Average abnormal return Sum Cumulative average residual Ross Days from announcement -4 -3 -2 -1 0 1 2 3 4