b) *-*~N(0,1), and W₁=~N(0,1), for i=1,2,3,...,10, then: oy Let Z₁ = σχ i) State, with parameter(s), the probability distribution of the statistic, T = ² Σ₁W₁² ² 10 21, 2,2 ° iii) Calculate the probability that a statistic T = Z₁ + W₁ is at most 4. ii) Find the mean and variance of the statistic T =

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