document.write( "Question 363475: The least and greatest numbers in a list of 7 real numbers are 2 and 20 ,respectively. The median of the list is 6 , and the number 3 occurs most often
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document.write( "which of the following could be the average (arithmetic mean) of the numbers in the list ?\r
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document.write( "I 7\r
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document.write( "II 8.5\r
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document.write( "III 10\r
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document.write( "(A) I only\r
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document.write( "(B)I and II only\r
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document.write( "(c) I and III only \r
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document.write( "(D) II and III only \r
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document.write( "(E) I, II, and III
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Algebra.Com's Answer #259172 by robertb(5830)![]() ![]() You can put this solution on YOUR website! (E) I, II, and III. \n" ); document.write( "We could have the following arrangement for the numbers: \n" ); document.write( "2,3,3,6,x,y,20, in ascending order. The mean is formed as follows: \n" ); document.write( " \n" ); document.write( "If the average is 7, then x+y = 15, which is very much possible for two numbers x and y between 6 and 20.(Take 7 and 8, e.g.) If the average is 8.5, then x+y = 25.5, which again is possible for two numbers between 6 and 20 (take 10 and 15.5, e.g.) If the average is 10, then x+y = 36, which again is possible for two numbers between 6 and 20 (take 17 and 19, e.g.) \r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |