Movie companies need to predict the gross receipts of individual movies after a movie has debuted. The accompanying results are the first weekend gross, the national gross, and the worldwide gross (in millions of dollars) of six movie Complete parts (a) through (d) below. Click the icon to view the gross receipts of the six movies. a. Compute the covariance between first weekend gross and national gross, first weekend gross and worldwide gross, and national gross and worldwide gross. Find the covariance between first weekend gross and national gross. (Round to four decimal places as needed.) i Gross receipts of six movies - X. First National Worldwide Title Weekend Gross Gross Movie A 90.843 317.504 976.867 Movie B 88.153 261.437 878.585 Movie C 93.633 249.759 795.168 Movie D 102.223 290.737 896.186 Movie E 77.134 292.073 938.252 Movie F 77.923 301.159 934.822 Print Done