Unformatted text preview: and the standard deviation is 2. You know that that distribution is normal. You observe an xvalue of 6. Find the zscore for the observed x=6. Is the value unusual? EXPLAIN! σ μ= x z = 2 10 6= 2 4= 2.0 Apply 689599.7 or ztable. Look for value as or more extreme. ztable area lower than 2 is 0.0228 or 2.28%. By 689599.7, you would find the area is 2.5% or 0.025. Thus, the value does seem somewhat unusual....
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 Fall '08
 ABBEY
 Normal Distribution, Standard Deviation, #, 2.5%, 2.28%

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