mean of twenty observations is 15. if two observations 3and14 are replaced by 8and9, then the new mean will be-​

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mean of twenty observations is 15. if two observations 3and14 are replaced by 8and9, then the new mean will be….​

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Alaia 4 weeks 2021-10-01T21:16:24+00:00 2 Answers 0 views 0

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    2021-10-01T21:17:30+00:00

    Answer:

    since 3 and 14 are replaced by 8 and 9, ther is no change in sum of observations or number of observations so, the mean remains same so the mean is 15

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    2021-10-01T21:18:09+00:00

    Answer:

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18:9+8+9*3-7:3-1*13 = ? ( )