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2010年2月25日 星期四

Normal Distribution

X=N(3,4)

P(1 <X <7)=?

58 則留言:

B9733170 提到...

X=N(3,4)
變異數=3,標準差=2
P(1 <X <7)
=P(1-3/2 <Z <7-3/2)
=P(-1 <Z <2)
=(68.26%+95.44%)/2
=0.8185

B9733151 提到...

X=N(3,4)

P(1 <X <7)=?

=P([1-3]/2<Z<[7-3]/2)
=P(-1<Z<2)
=P(Z<2)-P(Z<-1)
=0.9772-0.1587
=0.8185

B9733168 提到...

=P((1-3)/2 < X < (7-3)/2)
=P(-1 < X < 2)
=P(X < 2) - P(X < -1)
=0.9772 - 0.1587
=0.8185

B9733173 提到...

P(1<X<7)
=P((1-3)/2<Z<(7-3)/2)
=P(-1<Z<2)
=P(Z<2)-P(Z<-1)
=0.9772-0.1587
=0.9185

B9733134 提到...

X = N(3,4)

P(1 < X < 7 ) =
P(-1< Z < 2 ) =
P( Z < 2 ) - P ( Z< -1 ) =
0.9972 - 0.1587 = 0.8385

Ans = 0.8385

B9733193 提到...

ANS:
P(1<x<7)=P[(1-3)/2<x<(7-3)/2]
=P(-1<x<2)
=P(x<2)-P(x<-1)
=0.9772-0.1587
=0.8185

B9733141 提到...

P(1 <X <7)
=p(1-3/2<z<7-3/2)
=p(-1<z<2)
=p(z<2)-p(-1<z)
=0.9772-0.1587
=0.8185

b9733126 提到...

P(1<X<7)=P(1-3/2<Z<7-3/2)
=P(-1<Z<2)
=P(Z<2)-P(Z<-1) 查表
=0.9772-0.1587
= 0.8185

B9733166 提到...

μ=3,σ=2

Z=X-μ/σ

P(1P(1-3/2<Z<7-3/2)

=P(-1<Z<2)

=P(Z<2)-P(-1<Z)

=0.9772-0.1587

=0.8185

B9733171 提到...

X=N(3,4)
P(1 <X <7)=?
=P([1-3]/2<Z<[7-3]/2)
=P(-1<Z<2)
=P(Z<2)-P(Z<-1)
=0.9772-0.1587
=0.8185

B9733165 提到...

M=3
σ=2

p(1<x<7)
=p(1-3/2<z<7-3/2)
=p(-1<z<2)
=p(z<2)-p(z<-1)
=0.9772-0.1587
=0.8185

b9733129 提到...

M = 3
σ = 2

p(1<x<7)
= p(1-3/2<z<7-3/2)
= p(-1<z<2)
= p(z<2)-p(z<-1)
= 0.9772-0.1587
= 0.8185

ANS:0.8185

b9733123 提到...
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b9733181 提到...
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b9733174 提到...
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b9733136 提到...
網誌管理員已經移除這則留言。
b9733163 提到...

P(1<X<7)=P(1-3/2<Z<7-3/2)
               =P(-1<Z<2)
               =P(Z<2)-P(Z<-1) 查表
               =0.9772-0.1587      
               = 0.8185

B9733161 提到...

P(1<X<7)=P(1-3/2<Z<7-3/2)
               =P(-1<Z<2)
               =P(Z<2)-P(Z<-1) 查表
               =0.9772-0.1587      
               = 0.8185

b9733124 提到...

=P([1-3]/2<Z<[7-3]/2)
=P(-1<Z<2)
=P(Z<2)-P(Z<-1)
=0.9772-0.1587
=0.8185

B9733135 提到...

X=N(3,4)

P(1 <X <7)=?

=P([1-3]/2<Z<[7-3]/2)
=P(-1<Z<2)
=P(Z<2)-P(Z<-1)
=0.9772-0.1587
=0.8185

B9733134 提到...

X = N(3,4)

P(1 < X < 7 ) =
P(-1< Z < 2 ) =
P( Z < 2 ) - P ( Z< -1 ) =
0.9772 - 0.1587 = 0.8185

Ans = 0.8185

B9733176 提到...

M=3
σ=2

p(1<x<7)
=p(1-3/2<z<7-3/2)
=p(-1<z<2)
=p(z<2)-p(z<-1)
=0.9772-0.1587
=0.8185

B9733127 提到...

p((1-3)/2<x<(7-3)/2)
=p(-1<x<2)
=p(x<2)-p(x<-1)
=0.9772-0.1587
=0.8185

B9733188 提到...

p((1-3)/2<x<(7-3)/2)
=p(-1<x<2)
=p(x<2)-p(x<-1)
=0.9772-0.1587
=0.8185

B9733175 提到...

X=N(3,4)

P(1 <X <7)=?

=P([1-3]/2<Z<[7-3]/2)
=P(-1<Z<2)
=P(Z<2)-P(Z<-1)
=0.9772-0.1587
=0.8185

B9733137 提到...

X=N(3,4)

P(1 <X <7)=?

=P([1-3]/2<Z<[7-3]/2)
=P(-1<Z<2)
=P(Z<2)-P(Z<-1)
=0.9772-0.1587
=0.8185

b9733140 提到...

 p((1-3)/2<x<(7-3)/2)
=p(-1<x<2)
=p(x<2)-p(x<-1)
=0.9772-0.1587
=0.8185

b9733194 提到...

P(1-3/2<Z<7-3/2)
=P(-1<Z<2)
=P(Z<2)-P(Z<-1)
=0.9772-0.1587
= 0.8185

b9733159 提到...

 p((1-3)/2<x<(7-3)/2)
=p(-1<x<2)
=p(x<2)-p(x<-1)
=0.9772-0.1587
=0.8185

b9733149 提到...

p((1-3)/2<x<(7-3)/2)
=p(-1<x<2)
=p(x<2)-p(x<-1)
=0.9772-0.1587
=0.8185

b9733159 提到...

p((1-3)/2<x<(7-3)/2)
=p(-1<x<2)
=p(x<2)-p(x<-1)
=0.9772-0.1587
=0.8185

b9733140 提到...

p((1-3)/2<x<(7-3)/2)
=p(-1<x<2)
=p(x<2)-p(x<-1)
=0.9772-0.1587
=0.8185

b9733132 提到...

p((1-3)/2<x<(7-3)/2)
=p(-1<x<2)
=p(x<2)-p(x<-1)
=0.9772-0.1587
=0.8185

B9733143 提到...

p((1-3)/2<x<(7-3)/2)
=p(-1<x<2)
=p(x<2)-p(x<-1)
=0.9772-0.1587
=0.8185      

b9733147 提到...

p((1-3)/2<x<(7-3)/2)
=p(-1<x<2)
=p(x<2)-p(x<-1)
=0.9772-0.1587
=0.8185

b9733183 提到...

p((1-3)/2<x<(7-3)/2)
=p(-1<x<2)
=p(x<2)-p(x<-1)
=0.9772-0.1587
=0.8185       

b9733138 提到...

p((1-3)/2<x<(7-3)/2)
=p(-1<x<2)
=p(x<2)-p(x<-1)
=0.9772-0.1587
=0.8185

B9733130 提到...

p((1-3)/2<x<(7-3)/2)
= p(-1<x<2)
= p(x<2)-p(x<-1)
= 0.9772-0.1587
= 0.8185

B9733144 提到...

p((1-3)/2<x<(7-3)/2)
=p(-1<x<2)
=p(x<2)-p(x<-1)
=0.9772-0.1587
=0.8185

B9733145 提到...

p((1-3)/2<x<(7-3)/2)
=p(-1<x<2)
=p(x<2)-p(x<-1)
=0.9772-0.1587
=0.8185

b9733184 提到...

P(1<X<7)=P(1-3/2<Z<7-3/2)
=P(-1<Z<2)
=P(Z<2)-P(Z<-1) 查表
=0.9772-0.1587
= 0.8185

b9533009 提到...

X=N(3,4)
變異數=3
標準差=2
P(1<x<7)=?
=P(1-3/2<Z<7-3/2)
=P(-1<Z<2)
=P(Z<2)-P(Z<-1)
=0.9772-0.1587
=0.8185

b9533009 提到...

X=N(3,4)
變異數=3
標準差=2
P(1<x<7)=?
=P(1-3/2<Z<7-3/2)
=P(-1<Z<2)
=P(Z<2)-P(Z<-1)
=0.9772-0.1587
=0.8185

b9733123 提到...

p(1-3/2<z<7-3/2)=p(-1<x<2)
P(x<2)-p(-1<x)=0.9972-0.1587=0.8185

B9733173 提到...

P(1<X<7)
=P((1-3)/2<Z<(7-3)/2)
=P(-1<Z<2)
=P(Z<2)-P(Z<-1)
=0.9772-0.1587
=0.8185

B9733156 提到...

P(1<X<7)=P(1-3/2<Z<7-3/2)
=P(-1<Z<2)
=P(Z<2)-P(Z<-1)
=0.9772-0.1587
= 0.8185

b9533042 提到...

p((1-3)/2<x<(7-3)/2)
=p(-1<x<2)
=p(x<2)-p(x<-1)
=0.9772-0.1587
=0.8185

B9733200 提到...

P(1<X<7)=P(1-3/2<Z<7-3/2)
=P(-1<Z<2)
=P(Z<2)-P(Z<-1) 查表
=0.9772-0.1587
= 0.8185

B9733200 提到...

P(1<X<7)=P(1-3/2<Z<7-3/2)
=P(-1<Z<2)
=P(Z<2)-P(Z<-1) 查表
=0.9772-0.1587
= 0.8185

B9733162 提到...

P(1<X<7)=P(1-3/2<Z<7-3/2)
=P(-1<Z<2)
=P(Z<2)-P(Z<-1) 查表
=0.9772-0.1587
= 0.8185

B9733162 提到...

P(1<X<7)=P(1-3/2<Z<7-3/2)
=P(-1<Z<2)
=P(Z<2)-P(Z<-1) 查表
=0.9772-0.1587
= 0.8185

B9733162 提到...

P(1<X<7)=P(1-3/2<Z<7-3/2)
=P(-1<Z<2)
=P(Z<2)-P(Z<-1) 查表
=0.9772-0.1587
= 0.8185

B9733179 提到...

P(1<X<7)=P(1-3/2<Z<7-3/2)
=P(-1<Z<2)
=P(Z<2)-P(Z<-1) 查表
=0.9772-0.1587
= 0.8185

b9733172 提到...

B9733176 提到...
M=3
σ=2

p(1<x<7)
=p(1-3/2<z<7-3/2)
=p(-1<z<2)
=p(z<2)-p(z<-1)
=0.9772-0.1587
=0.8185

b9733131 提到...

P(1<X<7)=P(1-3/2<Z<7-3/2)
=P(-1<Z<2)
=P(Z<2)-P(Z<-1) 查表去
=0.9772-0.1587
= 0.8185

B9733182 提到...

=P((1-3)/2 < X < (7-3)/2)
=P(-1 < X < 2)
=P(X < 2) - P(X < -1)
=0.9772 - 0.1587
=0.8185

B9733178 提到...

X=N(3,4)
變異數=3,標準差=2
P(1 <X <7)
=P(1-3/2 <Z <7-3/2)
=P(-1 <Z <2)
=(68.26%+95.44%)/2
=0.8185

b9733150 提到...

X=N(3,4)
變異數=3,標準差=2
P(1 <X <7)
=P(1-3/2 <Z <7-3/2)
=P(-1 <Z <2)
=(68.26%+95.44%)/2
=0.8185

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