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Unformatted text preview: random variable = = = 85 . 85 . 85 . ) ( 85 . x Z P x X P x X P From the Table 6.1 of A&T (and interpolating) 85 . ) 0365 . 1 ( = Z P That is, 1.0365 and 85 . x both stand for the 85 th percentile point of the standard normal distribution. Equating and solving gives us mph x x 2 . 44 ) 6 )( 0365 . 1 ( 38 ) 0365 . 1 ( 0365 . 1 85 . 85 . + = + = =...
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This document was uploaded on 02/05/2011.
 Spring '11

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