Question 507486
if x is N(0,4) 
Find P(1<=x<=2) 
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z(1) = (1-0)/4 = 1/4
z(2) = (2-0)/4 = 1/2
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P(1<= x <=2) = P(1/4 < z < 1/2) = 0.0928
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and P(1<=x<=2 | x>=1) 
= P(1<=x<=2 AND x>=1)/P(x>=1) 
= P(1<= x <=2)/P(x>= 1)
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P(x>=1) = P(z >= 1/4) = 0.4013
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Ans: 0.0928/0.4013 = 0.2313
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Cheers,
Stan H.
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