document.write( "Question 1118641: Assume that the mean hourly cost to operate a commercial airplane follows the normal distribution with a mean of $1900 per hour and a standard deviation of $250.\r
\n" ); document.write( "\n" ); document.write( "What is the maximum operating cost for the lowest 5% of the airplanes? (Round z-score computation to 2 decimal places and the final answer to 1 decimal place.)\r
\n" ); document.write( "\n" ); document.write( "Maximum operating cost $
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Algebra.Com's Answer #734062 by Boreal(15235)\"\" \"About 
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z.05=-1.65
\n" ); document.write( "z=(x-mean)/sd=(x-1900)/250=-1.65
\n" ); document.write( "x-1900=-412.5
\n" ); document.write( "x=$1487.5
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