A bookstore at the Hartsfield-Jackson Airport in Atlanta sells reading materials (paperback books, newspapers, magazines) as well as snacks (peanuts, pretzels, candy, etc.). A point-of-sale terminal collects a variety of information about customer purchases. Shown below is a table showing the number of snack items, x, and the number of items of reading material, y, purchased by the most recent 600 customers. what are the expected values for x and y ? E(x)=1.055&E(y)=0.75E(x)=1.025&E(y)=0.8E(x)=1.115&E(y)=0.5E(x)=1.105&E(y)=0.6 A bookstore at the Hartsfield-Jackson Airport in Atlanta sells reading materials (paperback books, newspapers, magazines) as well as snacks (peanuts, pretzels, candy, etc.). A point-of-sale terminal collects a variety of information about customer purchases. Shown below is a table showing the number of snack items, x, and the number of items of reading material, y, purchased by the most recent 600 customers. what are the variance for x and y ? Var(x)=0.2818&Var(y)=0.45Var(x)=0.2818&Var(y)=0.6Var(x)=0.3818&Var(y)=0.45Var(x)=0.3818&Var(y)=0.6 A bookstore at the Hartsfield-Jackson Airport in Atlanta sells reading materials (paperback books, newspapers, magazines) as well as snacks (peanuts, pretzels, candy, etc.). A point-of-sale terminal collects a variety of information about customer purchases. Shown below is a table showing the number of snack items, x, and the number of items of reading material, y, purchased by the most recent 600 customers. what is the covariance for x and y ? 0.14750.14750.12210.1221