Question

The arithmetic mean of the list of numbers above is 4 . If and are integers and k is not equalt to m what is the median of the list?
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Answer Choices

  • A.
    2
  • B.
    2.5
  • C.
    3
  • D.
    3.5
  • E.
    4

Steps

ExplanationCalculationsHelp
Write the equation relating the arithmetic mean to the sum of the six numbers.
Simplify each side of the equation.
Isolate the sum of and .
Since and are distinct integers whose sum is 8, one must be less than 4 and the other greater than 4.
When the six numbers are arranged in ascending order, the two original 3's occupy the third and fourth positions.
Since we have an even number of values, the median is the average of the two middle values (third and fourth numbers in the ordered list).
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Final Answer

3 (C)