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 68 68 59 62 29 y: Percentage success for Canada geese nests 57 51 30 33 42 la USE SALT (a) Use a calculator to verify that 2x = 235; 2x2 = 17,414; 2y = 213; and 2y2 = 9,503. 2x 3x2 2y Eyz (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 four decimal places.) 1! 52 s (c) Use the results of part (a) to compute the sample mean, variance, and standard deviation for y, the percent of successful Canada geese nests. (Round your answers to four decimal places.) Y 52 s (d) Use the results of parts (b) and (c) to compute the coefcient of variation for successful mallard nests and Canada geese nests. (Round your answers to one decimal place.) X Y CV \"/0 % Write a brief explanation of the meaning of these numbers. What do these results say about the nesting success rates for mallards compared to Canada geese? The CV is the ratio of the standard deviation to the mean; the CV for Canada goose nests is higher. 7 The CV is the ratio of the standard deviation to the mean; the CV for Canada goose nests is equal to the CV for mallard nests. 7 The CV is the ratio of the standard deviation to the mean; the CV for mallard nests is higher. The CV is the ratio of the standard deviation to the variance; the CVfor Canada geese nests is higher. 7 The CV is the ratio of the standard deviation to the variance; the CVfor Canada goose nests is equal to the CV for mallard nests. The CV is the ratio of the standard deviation to the variance; the CVfor mallard nests is higher. Would you say one group of data is more or less consistent than the other? Explain. The x data group is more consistent because the standard deviation is smaller. The two groups are equally consistent because the standard deviations are equal. - The y data group is more consistent because the standard deviation is smaller