document.write( "Question 1074824: The tread life of a particular brand of tire can be describe by a normal distribution with a mean of 60,000 miles and a standard deviation of 2300 miles. what is the probability a particular tire of this brand will last more than 57,700 miles? express the probability as a decimal. \n" ); document.write( "
Algebra.Com's Answer #689480 by Boreal(15235)\"\" \"About 
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z=(x-mean)/sd
\n" ); document.write( ">=(57700-60000)/2300
\n" ); document.write( ">= -1
\n" ); document.write( "That is 0.8413.
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