Let A be the real symmetric matrix of a quadratic form Q in the observations of a random sample of size n from a distribution which is N(0, 2 ) Given that Q and the mean X of the sample are independent, what can be said of the elements of each row (column) of A ...

Solution Since Q and the mean X of the sample are independent the elements of each row colu ...

Let A be the real symmetric matrix of a quadratic form Q in the observations of a

Question:

Let A be the real symmetric matrix of a quadratic form Q in the observations of a random sample of size n from a distribution which is N(0, σ²). Given that Q and the mean ‾X of the sample are independent, what can be said of the elements of each row (column) of A?

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