document.write( "Question 924962: Assume that the mean hourly cost to operate a commercial airplane follows the normal distribution with a mean of $2,000 per hour and a standard deviation of $285.
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\n" ); document.write( "\n" ); document.write( "What is the operating cost for the lowest 5 percent of the airplanes? (Round z value to 2 decimal places. Omit the \"$\" sign in your response.)
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Algebra.Com's Answer #561222 by ewatrrr(24785)\"\" \"About 
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mean of $2,000 per hour and a standard deviation of $285
\n" ); document.write( "inv(.05)= 1.64
\n" ); document.write( "-1.64(285) + 2000 = X = 1.532.6
\n" ); document.write( "operating cost for the lowest 5 percent of the airplanes ≤ $1,532 per hour
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