The mean of nine observations is 36. If the mean of the first six observations is 37, then what is
the mean of the last three observations?
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Answer:
34
Step-by-step explanation:
Sum of 9 observations = 36×9 = 324
Sum of first 6 observations = 37×6 = 222
Remaining sum of 3 observations = 324 - 222 = 102
Mean of 3 observations = 102/3 = 34
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