For a B.D. mean is 4 and S.D is √2 Find the parameters.

1.	For a B.D. mean is 4 and S.D is √2 Find the parameters.
Answer» S.D.= √var = √npq = √2; squaring both sides; npq = 2; 4q = 2; ∴ q = 0 ∴ 5, p = 0.5 & put p = 0.5 in np = 4; ∴ n = 8

Answer»

S.D.= √var = √npq = √2;

squaring both sides;

npq = 2; 4q = 2;

∴ q = 0

∴ 5, p

= 0.5 & put p

= 0.5 in np = 4;

∴ n = 8

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