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I need help on part b, c, d, and f.

Suppose X follows a N3( μ, Σ ) distribution with 784 504-200 mean vector μ= | 130 | and covariance matrix 175 200 0 1600 a Find P(X, > 139). b Find p 12 Cor(X1. X2) c) Find P(X2> 139 |X1-103) Hint: (Xi.X2) jointly follow a bivariate normal distribution d) Find P(X2< X e) Find P(X2<X3) Find P(X2〈 145〈X3) Hint: P(X2〈145 & 145 〈 X 3) g)find P(X1 + 2X2+3X3> 1000)

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Anes n Enon tmet M3 T31 T31 T33 0 =)4. ~N (130,900 309 e 100 dx This Com beat leni

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