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Secure ! https., www webassign, net/web/Student Assgnment-Responses/ust,dep. 16189399 Need Help? Teter ecd FHelpReadTak to a Tutor -16 points 7.1009. My Notes Ask Your Teacher At Burnt Mesa Pueblo, archaeological studies have used the method of tree-ring dating in an effort to determine when prehistoric people lived in the pueblo. Wood from several excavations gave a mean of (year) 1232 with a standard deviation of 3 3 years. The distribution of dates was more or less mound-shaped and symmetrical about the mean. Use the empirical rule to estimate the following (a) a range of years centered about the mean in which about 68% of the data (tree-ring dates) will be found between and A.D. (b) a range of years centered about the mean in which about 9S% of the data (tree-ring dates) will be found between and A.D (c) a range of years centered about the mean in which almost all the data (tree-ring dates) will be found between and A.D Need Help? LRor to a Tutor My Notes Ask Your A vending machine automatically pours soft drinks into cups. The amount of soft drink dispensed into a cup is normally distributed with a mean of 7.6 ounces and standard deviation of 0.4 ounce. Examine the figure below and answer the following questions. Area Under a Normal Curve

Explanation / Answer

a.

a range of years centered about the mean in which about 68% of the data (tree-ring dates) will be found between

          1232 -33 =1199and 1232+33 = 1265 A.D

B.

a range of years centered about the mean in which about 95% of the data (tree-ring dates) will be found between

1232 -2 * 33 = 1166 and1232+2* 33=1298 A.D

C.

a range of years centered about the mean in which almost all the data (tree-ring dates) will be found between

                   1232 -3*33=1133and1232+3*33=1331 A.D.

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