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AXISHK

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Poisson distribution Question

The demand of IT service is a random variable (X) having the Poisson distribution μ=3.4. The cost of producing each pizza is 20 and each is sold at selling price of 40.
Suppose 5 pizza are made daily, no pizza is reserved for next day. Find the expected total profit daily.

p(0) x -100 + p(1) x -60 + p(2) x -20 + p(3) x 20 + p(4) x 40 + p(>=5) x 100

My answer = 27.1004. Suggest ans = 27.118.

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