document.write( "Question 773769: 2. The time to run 100m for a group of children follows a normal distribution with mean 13.3 seconds and standard deviation 4.5 seconds.\r
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document.write( "(i) What is the probability that a randomly chosen child runs the race in a shorter time than 12 seconds?\r
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document.write( "(ii) What is the cut-off time for the slowest 10%? \n" );
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Algebra.Com's Answer #471850 by oscargut(2103)![]() ![]() You can put this solution on YOUR website! Answers:\r \n" ); document.write( "\n" ); document.write( "i) 0.386\r \n" ); document.write( "\n" ); document.write( "ii) 7.533\r \n" ); document.write( "\n" ); document.write( "If you need more help (online tests, assignments)\r \n" ); document.write( "\n" ); document.write( "You can contact me at mthman@gmail.com\r \n" ); document.write( "\n" ); document.write( "Thanks \n" ); document.write( " |