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A manufacturer of clothing knows that the probability of a snap flaw is 0.003 . An inspector examines 60 shirts in anhour, each with 6
- A manufacturer of clothing knows that the probability of a snap flaw is 0.003. An inspector examines 60 shirts in anhour, each with 6 snaps. Using a Poisson probabilitymodel, what is the probability she finds no snapflaws?
2. A broker has calculated the expected values of two different financial instruments Xand Y. Suppose that
E(X)=$94, E(Y)=$82, SD(X)=$13, SD(Y)=$7
7. Find each of the following.
a) E(X+10)
b) SD(X+10)
c) E(5Y)
d) SD(5Y)
c) E(X+Y)
c) SD(X+Y)
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