Question: We observe random variables Y1,...,Yn that are mutually independent, each with a normal distribution with variance 2. Furthermore, EYi = xi, where is an

We observe random variables Y1,...,Yn that are mutually independent, each with a normal distribution with variance σ2. Furthermore, EYi = βxi, where β is an unknown parameter and x1,... ,xn are fixed constants not all equal to 0.
Find the MLE of β. Compute its mean and variance.

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