is an expert in wildlife conservation. in his book The Woll in the Southwest: The Making of an Endangered Species (University of Arizona Press), he records the following weigt adult grey wolves from two regions in Old Mexico. Chihuahua region: x, variable in pounds 86 75 91 70 79 80 68 71 74 64 Durango region: x, variable in pounds 68 72 79 68 77 89 62 55 68 68 59 63 66 58 54 71 59 67 (a) Use a calculator with mean and standard deviation keys to calculate x, 51, x2, and s3. (Use 2 decimal places.) x 75.70 x 8.19 X2 66.83 $2 8.66 (b) Let a, be the mean weight of the population of all grey wolves in the Chihuahua region. Let 4z be the mean weight of the population of all grey wolves in the Durango region. Find a 98% confidence interval for 4, - H2. (Use 2 decimal places.) lower limit 13.77 x upper limit 17.82 x (c) Examine the confidence interval and explain what it means in the context of this problem. Does the interval consist of numbers that are all positive? all negative? of different signs? the 98% level of confidence, what can you say about the comparison of the average weight of grey wolves in the Chihuahua region with the average weight of grey wolves in the Duran region?

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Statements and Logic

Logic is the analysis of general patterns of thoughts without regard to any specific sense of context.