SOLUTION: The mean of the eight positive intergers (all < 10) 5,8,X,X,6,Y,6,5 is 7. Find the values of X and Y, and then state the median of the intergers.
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Question 1020446: The mean of the eight positive intergers (all < 10) 5,8,X,X,6,Y,6,5 is 7. Find the values of X and Y, and then state the median of the intergers.
Answer by robertb(5830) (Show Source): You can put this solution on YOUR website!
7 being the mean of the eight numbers means that
==> 30+2x+y = 56
==> 2x+y = 26
Only two positive integers both less than 10 will satisfy the last equation, namely and .
Now that x and y are known, arrange the positive integers in an array:
5,5,6,6,8,8,9,9
The median of the data set will be the average of the two middle terms 6 and 8, namely .
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