If X1 is the mean of a random sample of size n from a normal population with the mean u and the variance o, X2 is the mean of a random sample of size n from a normal population with the mean u and the variance o, and the the estimator w. X + (1 – w). X2 is the unbiased - estimator. Is this estimator consistent?

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Equations and Inequations

Equations and inequalities describe the relationship between two mathematical expressions.

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A linear function can just be a constant, or it can be the constant multiplied with the variable like x or y. If the variables are of the form, x2, x1/2 or y2 it is not linear. The exponent over the variables should always be 1.