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Lewis works the overnight shift as a security guard at an office building.

Lewis has constructed a probability distribution of the number of people that arrive at the office building throughout the night.

Number of People 0 1 2 3 4 5
Probability 0.1 0.2 0.2 0.3 0.1 0.1

Determine the expected number of people arriving during the overnight shift

Step-by-step answer

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