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The mean of 12 observations is 75 . If two observations are discarded, then the mean of the remaining observations is 65 . What is the mean of the discarded observations?

Options

  1. A250
  2. B125
  3. C120
  4. DCannot be determined due to insufficient data

Correct answer

B. 125

Step-by-step solution

Mean of discarded observation = Sum of 12 observation - Sum of 10 observation 2 = 12 75-10 65 2 =125

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