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If x1, x2, .....xn are n observations su...

`If x_1, x_2, .....x_n` are n observations such that `sum_(i=1)^n (x_i)^2=400` and `sum_(i=1)^n x_i=100` then possible values of n among the following is (1) 18 (2) 20 (3) 24 (4) 27

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Ifx_(1),x_(2),....x_(n) are n observations such that sum_(i=1)^(n)(x_(i))^(2)=400 and sum_(i=1)^(n)x_(i)=100 then possible values of n among the following is (1)18(2)20(3)24(4)27

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 among the following is :

let x_(1),x_(2)......x_(n) be n observations such that sum x_(i)^(2)=200 and sum x_(i)=40 then a possible value " of n among the following is (1) 4 (2) 5 (3) 6 (4) 10

Let x_(1),x_(2),......x_(n), bem n observations such that sum x_(i)^(2)=400 and sum x_(i)=80. Then a possible value of n amongthe following is (1)12(2)9(3)18(4)15

Let x_(1), x_(2),….,x_(n) be n observation such that sum(x_(i))^(2)=400 and sumx_(i)=40 , then a possible value of n among the following is