Question

For mallard ducks and Canada geese, what percentage of nests are successful (at least one offspring survives)? Studies in Montana, Illinols, Wyoming, Utah, and Calfornia give the following percentages of successful nests (Reference: The Wildliafe Society Press, Washington, D.C.) x: Percentage success for mallard duck nests 80 y: Percentage success for Canada goose nests 57 21 24 24 18 32 23 50 (a) Use a calculator to verify that Σ× = 196; b2-10,574; Ey-144; and Ey, 5,166. 2x Xy (Round your answers to two decimal (b) Use the results of part (a) to compute the sample mean, variance, and standard deviation for x, the percent of successful mallard nests places.) e mean, variance, and standard devlation for y, the percent of successful Canada goose nests. (Round your answers to two (c) Use the results of part (a) to compute the sampl 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

Answer 1

AnsGven tht て0 32-2311 SO 39. 5 -254, 구 5. 96 Vx 10026.88 35 . 오 Cv 5.9 22.2