David E. Brown is an expert in wildlife conservation. In his book The Wolf in the Southwest: The Making of an Endangered Species (University of Arizona Press), he records the following weights of adult grey wolves from two regions in Old Mexico. Chihuahua region: x1 variable In pounds 86 75 91 70 79 80 68 71 74 64 Durango region: x2 variable in pounds 68 72 79 68 77 89 62 55 68 68 59 63 66 58 54 71 59 67 I USE SALT new window for the SALT program (a) Use a calculator with mean and standard deviation keys to calculate )7], 51, )72, and 52. (Round your answers to four decimal places.) i1 = 75.80 q 51 = 3.32 x x2 = 66.83 x 52 = 8.87 x (b) Let \"1 be the mean weight of the population of all grey wolves in the Chihuahua region. Let I42 be the mean weight of the population of all grey wolves in the Durango region. Find an 85% condence interval for pl \"2. (Round your answers to two decimal places.) lower limit 3.89 x upper limit 14.05 x