On average, there are 3.2 defects in sheet of rolled steel. Suppose that number of defects follows Poisson distribution.
Q1) Determine the probability of having exactly 3 defects in roll?
a) 0.412
b) 0.223
c) 0.318
d) 0.335
Q2) Determine the probability of having more than 3 defects in a roll?
a) 0.354
b) 0.412
c) 0.621
d) 0.398
The given table shows joint probability distribution of X and Y. Determine the covariance between the X and Y?
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X
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1
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2
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3
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1
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0.10
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0.08
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0.06
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Y
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2
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0.16
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0.1
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0.11
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3
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0.02
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0.16
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0.21
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