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Let x (1), x (2), ... x (n) be n observ...

Let `x _(1), x _(2), ... x _(n)` be n observations such that `sum x _(i) ^(2) = 400 and sum x _(i) = 80.` Then a possible value of n is

A

15

B

18

C

9

D

12

Text Solution

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The correct Answer is:
B
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