Let X1, X2, X3, X4 be a random sample from a standard normal population. What is...

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Let X1, X2, X3, X4 be a random sample from a standard normal population. What is...

Let X1, X2, X3, X4 be a random sample from a standard normal population. What is the probability distribution (give the name of the distribution and the value of any parameter(s)) of

(a). (X1 - Xbar)^2 + (X2 - Xbar)^2 + (X3 - Xbar)^2 + (X4 - Xbar)^2

(b). ((X1 + X2 + X3 + X4)^2)/4

math Statistics-And-Probability

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