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Zeta company produces specialty hats that are primarily sold at special events. The cost of making a specialty hat is EUR 8.6. A piece of hat is sold for EUR 24. However, when the event ends, half of the unsold hats are sold EUR 4.8 a piece. The estimated demands are as follows. DEMAND PROBABILITY 300 0.05 400 0.1 a What is the service level? bj How many hats should the company produce for the upcoming event