10 customers ordered pizza. Five ordered 1 pizza, two ordered 2 pizzas, two ordered 3 pizzas, and one ordered 4 pizzas. What's the mean number of pizzas ordered for this discrete distribution?
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Answer:
(1×5)+(2×2)+(2×3)+(1×4)/10
=(5+4+6+4)/10
1.9=2approx
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