At Burnt Mesa Pueblo, archaeological studies have
At Burnt Mesa Pueblo, archaeological research have used the strategy of tree-ring courting in an effort todetermine when prehistoric folks lived within the pueblo. Wooden from a number of excavations gave a imply of(yr) 1245 with a regular deviation of 32 years. The distribution of dates was roughly moundshaped and symmetrical in regards to the imply. Use the empirical rule to estimate the next.(a) a spread of years centered in regards to the imply during which about 68% of the info (tree-ring dates) will befoundbetweenandA.D.(b) a spread of years centered in regards to the imply during which about 95% of the info (tree-ring dates) will befoundbetweenandA.D.(c) a spread of years centered in regards to the imply during which nearly all the info (tree-ring dates) might be foundbetweenandA.D.An individual's blood glucose stage and diabetes are carefully associated. Let x be a random variable measured inmilligrams of glucose per deciliter (1/10 of a liter) of blood. Suppose that after a 12-hour quick, therandom variable x can have a distribution that's roughly regular with imply ? = 88 and standarddeviation ? = 21. Observe: After 50 years of age, each the imply and customary deviation have a tendency to extend.For an grownup (beneath 50) after a 12-hour quick, discover the next chances. (Spherical your solutions tofour decimal locations.)(a) x is greater than 60(b) x is lower than 110(c) x is between 60 and 110(d) x is bigger than 140 (borderline diabetes begins at 140)