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 [AIEEE 2005]

AIEEE 2005 Math Solved Paper

Section: Mathematics

Question : 68 of 71

Marks: +1, -0

Let x1,x2,.........,xn be n observations such that
∑xi2=400 and ∑xi=80. Then a possible value of n among the following is

[AIEEE 2005]

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