The mean of four different observations is 17.5. When a new observation whose value 20 is added, what will be the new mean? - Study24x7
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Sanjay Verma
04 Feb 2020 03:09 PM study24x7 study24x7

The mean of four different observations is 17.5. When a new observation whose value 20 is added, what will be the new mean?

A

18

B

17.5

C

19

D

18.5

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