Because of the complexity of mathematical symbols, I screenshots the questions.

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1) Let X : (X1,X2, . . . ,Xn) be a sample of n observations each with a uniform in [0, (9) density 1fi0<$<6 me) ={ 9 0 else where 9 > 0 is an unknown parameter. Denote the joint density by L(X, t9).