If X1 and X2 are independent standard normal variables, find P(X1^2 + X2^2 > 2.41)

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Answer to a math question If X1 and X2 are independent standard normal variables, find P(X1^2 + X2^2 > 2.41)

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Jayne

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looking at chi square table. at df=2 the area at less than 2.41 = 0.30 P(X>2.41)=1-0.3 P(X>2.41)=0.7

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