Please explain to me the proper steps and calculations that are needed in order to solve this problem

But alll 77% 2:29 PM For mallard ducks and Canada geese, what percentage of nests are successful (at least one offspring survives)? Studies in Montana, Illinois, Wyoming, Utah, and California give the following percentages of successful nests (Reference: The Wildlife Society Press, Washington, D.C.). x: Percentage success for mallard duck nests 86 38 62 44 29 Percentage success for Canada goose nests 36 54 27 27 45 (a) Use a calculator to verify that Ex = 259; Ex2 = 15,461; Zy = 189; and Zy2 = 7,695. Ex Ex2 Ey Ey2 (b) Use the results of part (a) to compute the sample mean, variance, and standard deviation for x, the percent of successful mallard nests. (Round your answers to two decimal places.) (c) Use the results of part (a) to compute the sample mean, variance, and standard deviation for y, the percent of successful Canada goose nests. (Round your answers to two decimal places.) (d) Use the results of parts (b) and (c) to compute the coefficient of variation for successful mallard nests and Canada goose nests. (Round your answers to one decimal place.) CV