year 1250 with standard deviation 1-38 years. At a Assume that both sites had da

Question

year 1250 with standard deviation 1-38 years. At a Assume that both sites had dates were that were approximately normally distributed. In the first area, an object was found and dated as x second, removed site, the tree-ring dates gave a mean ana year i139 wen standard deewon sa-se yen another object was found and dated as x year 1250 year 1224, In the second places.) under the standard normal curve of the fgure above. (Round your answers to two deomal (b) Which of these two items is the more unusual as an archaeological find in its location? xs: the further a z value is from zero, the more unusual t s. x. the further a z the more unusual it is.

Explanation / Answer

z1 = (x1- mean)/sd =(1224 - 1250)/38 = -0.68421
z2 = (x2 - mean)/sd = (1250 - 1139)/38 = 2.921052631

b)

option B) is correct
the futher x value is from origin, the more unusual it is

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