1( = @ 1( > 2( > 3( 4( > 2( 45 % @ @ > > > @ > > = > 1( 180 2( 162 3 ...
1( = @ 1( > 2( > 3( 4( > 2( 45 % @ @ > > > @ > > = > 1( 180 2( 162 3 ...
1( = @ 1( > 2( > 3( 4( > 2( 45 % @ @ > > > @ > > = > 1( 180 2( 162 3 ...
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96E(x − y) = E(x) − E(y) = 02S21 SV(x − y) = V(x) + V(y) = +2=n1n28164+ = 18 ( ) . 2 (23. t Z n = Z ~ t(n)Y yn24Pˆ = 0/ 3z2pˆqˆn =d2d = 0/05( 1/96)2( 0/3)× ( 0/7)=≅ 323( 0/05)2. 1 (24 µ =12 δ2= 16 ⇒ δ = 418 −12P (X > 18 ) = P(Z > ) = P(Z > 1/5)= 1−φ1/5 = 1−0/9332 = 0/066410−12P (X < 10 ) = P(Z < ) = P(Z < 0/5)= φ0/5 = 0/30854= 40 × 0/ 3085 = 12/34 U = P + Zα δP= 0/4 + 1/96×0/08 = 0/57532(2X = 50 δ = 8 n = 60X − µ 52 − 50P(X > 52)= P(Z > ) = P(Z > ) = P(Z > 1/93)δ8n60⇒ 1−φ1/93 == 1−0/9732 = 0/0268(1
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