Determining probability that 3 roll are defected

Reference no: EM1316839

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?

			X
		1	2	3
	1	0.10	0.08	0.06
Y	2	0.16	0.1	0.11
	3	0.02	0.16	0.21

Reference no: EM1316839

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